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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1814 is correct. Good work!

#1815. If a number, when divided by 4, is reduced by 21; what is the number?

Have a great day, bobbym!

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

See you tomorrow and have a good night.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1815 is correct. Good work!

#1816. A dog takes 4 leaps for every 5 leaps of a hare but 3 leaps of a dog are equal to 4 leaps of the hare. Compare their speeds.

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1816 is perfect. Marvelous!

#1817. An airplane flies along the four sides of a square at the speeds of 200, 400, 600, and 800 kilometers per hour. Find the average speed of the plane around the field.

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1817 is correct. Stupendous!

#1818. Walking at

of its usual speed, a train is 10 minutes too late. Find its usual time to cover the journey.Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1818 is correct. Good work!

#1819. If the wages of 6 men for 15 days be $2100, then find the wages of 9 men for 12 days.

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1819 is correct. Neat work!

#1820. If 9 engines consume 24 tons of coal, when each is working 8 hours a day, how much coal will be required for 8 engines, each running 13 hours a day, it being given that 3 engines of former type consume as much as 4 engines of latter type?

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1820 is correct. Splendid!

#1821. If the cost of x meters of wire is d dollars, then what is the cost of y meters of wire at the same rate?

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

#1822. If a quarter kilogram of potato costs 60 cents, how many cents will 200 grams cost?

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1822 is correct. Neat job!

#1823. Find the Selling Price when Cost Price is $56.25 and the Gain is 20%.

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1823 is correct. Good work!

#1824. If the cost price is 96% of the selling price, then what is the profit percent?

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1824 is correct. Well done!

#1825. Solve the following system of equations:

and .Character is who you are when no one is looking.

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

#1826. A vendor bought bananas at 6 for $10 and sold them at 4 for $6. Find his gain or loss percent.

Character is who you are when no one is looking.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 81,367

Hi;

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 12,919

Hi bobbym,

The solution #1826 is correct. Well done!

#1827. A dishonest dealer professes to sell his goods at cost price but uses a weight of 960 grams for a kilogram weight. Find his gain percent.

Character is who you are when no one is looking.

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