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#4051 2012-07-28 23:56:40

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 15,955

Re: 10 second questions

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.

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#4052 2012-07-29 22:53:47

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi bobbym and anonimnystefy,

The solutions #4221 and #4222 are correct. Excellent!

#4223. A can do a piece of work in 20 days and B can do it in 30 days. How long would they take to do it working together?

#4224. A an do a piece of work in 6 days. A and B together can do the work in 4 days. How long would it take B to finish the work?


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.

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#4053 2012-07-29 23:10:15

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Thinking is cheating.

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#4054 2012-07-30 00:04:47

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 15,955

Re: 10 second questions

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

#4055 2012-07-30 23:35:21

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi bobbym and anonimnystefy,

The solutions #4223 and #4224 are correct. Neat work!

#4225. A and B together can reap a field in 10 hours, but by himself B requires 15 hours. How long would A take to reap the same field?

#4226. A and B can do a piece of work in 18 days, B and C in 24 days, and A & C in 36 days. In what time would they do it all working together?


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.

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#4056 2012-07-31 00:08:46

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 15,955

Re: 10 second questions

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

#4057 2012-07-31 01:59:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

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.
Thinking is cheating.

Offline

#4058 2012-07-31 22:38:50

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi anonimnystefy and bobbym,

The solutions #4225 and #4226 are correct. Excellent!

#4227. A train running at the average speed of 45 kilometers per hour passes an electric pole in 10 seconds. Find the length of the train.

#4228. Length of the train is 500 meters. If the speed is 60 kilometers per hour, then find the time to cross a pole.


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.

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#4059 2012-07-31 22:46:35

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

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.
Thinking is cheating.

Offline

#4060 2012-07-31 23:44:44

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 15,955

Re: 10 second questions

Hi ganesh

And congrats on 10000 posts. smile

Last edited by anonimnystefy (2012-07-31 23:56:09)


“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.

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#4061 2012-08-01 19:35:59

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: 10 second questions

Hello!

I don't like trains >_<

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#4062 2012-08-02 00:38:40

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi bobbym, anonimnystefy, and Denominator,

The solutions #4227 and #4228 are correct. Neat job! (Denominator, the solution #4227 is 125 meters, not 1250 meters).

Thanks a lot, anonimnystefy (On 10,000 posts)!

#4229. A cistern can be filled by tap A in 4 hours and B in 3 hours. How long would it take to fill if both taps are opened together?

#4230. Pipe A can fill a tank in 5 hours, pipe B in 10 hours, and C in 30 hours. If all the pipes are open, in how many hours would the tank be filled?


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.

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#4063 2012-08-02 01:03:53

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Thinking is cheating.

Offline

#4064 2012-08-02 01:20:33

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 15,955

Re: 10 second questions

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

#4065 2012-08-03 00:56:18

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi bobbym and anonimnystefy,

The solutions #4229 and #4230 are correct. Good work!

#4231. Find the Simple Interest on $1500 for 3 years at 10% per annum.

#4232. At what rate per annum would $5200 earn $624 in 2 years?


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

#4066 2012-08-03 02:12:35

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

Hi;



In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Thinking is cheating.

Offline

#4067 2012-08-03 15:57:49

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: 10 second questions

Hey

Yeah I must have added an extra zero in my working somewhere XD, sorry!

Last edited by Denominator (2012-08-03 15:58:53)

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#4068 2012-08-05 23:49:11

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi bobbym and Denominator,

bobbym : The solution #4231

Denominator : All correct. Outstanding!

#4233. Find the missing figures. ?% of 25 = 2.125

#4234. Find the missing figures. 9% of ? = 63


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.

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#4069 2012-08-06 01:03:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

Hi;



In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Thinking is cheating.

Offline

#4070 2012-08-06 07:07:10

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: 10 second questions

Hey ganesh

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#4071 2012-08-08 00:05:34

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi bobbym and Denominator,

The solutions #4233 and #4234 are correct. Neat job!

#4235. Which is greatest in 16 2/3%, 2/15, and 0.17?

#4236. A inspector rejects 0.08% of the meters as defective. How many will he examine to reject 2?


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

#4072 2012-08-08 00:14:52

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

Hi;


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Thinking is cheating.

Offline

#4073 2012-08-08 07:17:31

Denominator
Member
Registered: 2009-11-23
Posts: 155

Re: 10 second questions

Hi ganesh,


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#4074 2012-08-08 23:10:43

ganesh
Moderator
Registered: 2005-06-28
Posts: 19,175

Re: 10 second questions

Hi bobbym and Denominator,

Both the solutions #4235 and #4236 are perfect, bobbym! Good work!

Denominator, the solution #4235 is correct. Well done!

#4237. 88% of 370 + 24% of 210 - ? = 118

#4238. 860% of 50 + 50% of 860 = ?


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

#4075 2012-08-09 02:21:26

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 100,315

Re: 10 second questions

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.
Thinking is cheating.

Offline

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