Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi ganesh;

On problem #4375 how do you get the

(80/100)x = 24? There is no 80% stated in the problem.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

I missed a part of the problem #4375. Regretted!

The solutions #437 and #4377 are correct. Neat work!

#4378. After successive discounts of 12% and 5%, an article was sold for $209. What was the original price of the article?

#4379. Applied to a bill for $100,000, what is the difference between a discount of 40% and two successive discounts of 36% and 4%?

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solutions #4378 and #4379 are correct. Brilliant!

#4380. The marked price of a wristwatch was $720. A man bought the same for $550.80 after getting two successive discounts, the first being 10%. What was the second discount rate?

#4381. A trader marked the price of his commodity so as to include a profit of 25%. He allowed discount of 16% on the marked price. What is his actual profit percent?

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solutions #4380 and #4381 are correct. Good work!

#4382. The price of an article is raised by 30% and then two successive discounts of 10% each are allowed. What percent is the price of the article ultimately?

#4383. A retailer buys 30 articles from a wholesaler at the price of 27. If he sells them at their marked price, what is the gain percent in the transaction?

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solution #4382 is correct. Good work!

#4384. The cost price of an article is 64% of the marked price. Calculate the gain percent after allowing a discount of 12%.

#4385. At what percent above the cost price must a shopkeeper mark his goods so that he gains 20% even after giving a discount of 10% on the marked price?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solutions #4384 and #4385 are correct. Excellent!

#4386. A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printing price. What is the ratio of the cost price to the printed price of the book?

#4387. By selling an article at 2/5 of the marked price, there is a loss of 25%. What is the ratio of the marked price and the cost price of the article?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solution #4387 is correct. Good work!

#4388. A trader marked the selling price of an article at 10% above the cost price. At the time of selling, he allows certain discount and suffers a loss of 1% What is the percentage discount he allowed?

#4389. A shopkeeper fixes the marked price of an item 35% above its cost price. What is the percentage of discount allowed to gain 8%?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solutions #4388 and #4389 are correct. Neat work!

#4390. Kevin bought a suitcase with 15% discount on the labelled price. He sold the suitcase for $2880 with 20% profit on the labelled price. At what price did he buy the suitcase?

#4391. A shopkeeper sells a badminton racket, whose marked price is $30, at a discount of 15% and gives a ball costing $1.50 free with each racket. Even then he makes a profit of 20%. What is the cost price per racket?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solutions #4390 and #4391 are correct. Neat work!

#4392. A shopkeeper sold a television set for $17,940 with a discount of 8% and earned a profit of 19.6%. What would have been the percentage of profit earned if no discount was offered?

#4393. A shopkeeper sells 25 articles at $45 per article after giving 10% discount and earns 50% profit. If the discount is not given, what is the profit percent earned?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solutions #4392 and #4393 are correct. Neat work!

#4394. What is the value of (log[sub]3[/sub]4)(log[sub]4[/sub]5)(log[sub]5[/sub]6)(log[sub]6[/sub]7)(log[sub]7[/sub]8)(log[sub]8[/sub]9)?

#4395. Find the value of

.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solutions #4394 and #4395 are correct. Outstanding!

#4396. Find the value of

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,030

Hi ganesh

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi ganesh;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi anonimnystefy and bobbym,

The solution #4396 is correct. Neat work!

#4397. If a = b[sup]x[/sup], b = c[sup]y[/sup], and c = a[sup]z[/sup], then what is the value of xyz?

#4398. If log 3 = 0.477, and (1000)[sup]x[/sup], then what is the value of x?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**bobbym****bumpkin**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,454

Hi;

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**** Always satisfy the Prime Directive of getting the right answer above all else.**

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 22,965

Hi bobbym,

The solution #4397 is correct. Good work!

Regarding the problem #4398, I typed the problem incomplete. Regretted!

The problem should read

If log 3 = 0.477 and (1000)[sup]x[/sup] = 3, then what is x equal to?

#4399. If log[sub]10[/sub]2 = 0.3010 and log[sub]10[/sub]3 = 0.4771, then what is the value of log[sub]10[/sub]1.5?

#4400. If log[sub]10[/sub]2 = 0.3010 and log[sub]10[/sub]7 = 0.8451, then what is the value of log[sub]10[/sub]2.8?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline