another word problem

[mathgeek]

I am having trouble thinking through these problems. :lol:

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

 

[galactus]

Just set up the proportion.

$\displaystyle \frac{\text{number of pages}}{\text{(number of typists)(minutes)}}$

The number of pages per typist-minutes.

$\displaystyle \frac{2}{2\cdot 2}=\frac{18}{k\cdot 6}$

solve for k.

You may find this problem and similar ones if you google 'work problems'.

 

[mathgeek]

galactus, I was wondering if there is a certain formula for this. It looked like you used a formula. If so, can you write it down.

Thanks

 

[galactus]

Not a particular formula. Just use of proportions. Depends on the problem. Forget formulas and try thinking it through.