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Typists problem



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64 replies to this topic

#1 kentttj

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Posted 21 July 2007 - 05:43 AM

If two typists can type two pages in two minutes, how many typists does it take to type 18 pages in 18 minutes?
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#2 unreality

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Posted 21 July 2007 - 05:19 PM   Best Answer

two
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#3 comperr

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Posted 22 July 2007 - 04:03 AM

If two typists can type two pages in two minutes, how many typists does it take to type 18 pages in 18 minutes?


2 ?
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#4 heatherb1207

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Posted 22 July 2007 - 04:10 AM

If two typists can type two pages in two minutes, how many typists does it take to type 18 pages in 18 minutes?




If two typists can type two pages in two minutes, then one typist can type one page in one minute, which means she can then types a page/minute and would be able then to type 18 pages in 18 minutes since it's still a 1:1 ratio.
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#5 bonanova

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Posted 22 July 2007 - 08:26 AM

If two typists can type two pages in two minutes,
then one typist can type one page in one minute,


your math is off -- or your typist made a typo....

Two typists [together] can type at a pace of 1 page/minute.
and therefore, also, they can type 18 pages in 18 minutes
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#6 heatherb1207

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Posted 22 July 2007 - 06:11 PM


If two typists can type two pages in two minutes,
then one typist can type one page in one minute,


your math is off -- or your typist made a typo....

Two typists [together] can type at a pace of 1 page/minute.
and therefore, also, they can type 18 pages in 18 minutes




very true, thanks. I just thought 2 was such an obvious answer, so I tried to search further for something else, but... I can't argue with the correct math. 2 typist together type 1ppm so apart, assuming each is equal, each types .5ppm. Indeed both of them would be needed for the speed of 1ppm to type 18 pages in 18 minutes.
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#7 bonanova

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Posted 23 July 2007 - 10:41 AM

I first heard it posed as ... if a hen and a half can lay an egg and a half in a day and a half, how many hens would it take to lay 18 eggs in 3 days?

It's tempting to figure a hen can lay an egg a day so it would take 6 hens. But it takes a hen and a half to lay an egg a day, so it takes 9 .
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#8 fuzzyduck

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Posted 07 February 2008 - 07:31 AM

If two typists can type two pages in two minutes, how many typists does it take to type 18 pages in 18 minutes?



9 minutes

If it takes 2 typists, 2 mintues to type 2 pages, then they type 1 page each in 2 minutes. 18/2=9
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#9 bonanova

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Posted 07 February 2008 - 10:40 AM

9 minutes

If it takes 2 typists, 2 mintues to type 2 pages, then they type 1 page each in 2 minutes. 18/2=9

How many typists?
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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#10 Xspyder

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Posted 07 February 2008 - 11:29 AM

If two typists can type two pages in two minutes, how many typists does it take to type 18 pages in 18 minutes?


The answer is the one and only one.
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