Question

It takes Emma 18 minutes to type and spell check 14 pages of a manuscript. Find how long it takes her to type and spell check 77 pages. Round to the nearest whole number if necessary

Answer 1

The ratio is 18:14.

Then, we have to divide 77 by 18.

It is 4.277777777..., rounded by 4.

Then, we multiply 18 * 4.277777777...

so, It is 76.99999...

and finally, It is 77.

Answer 2

99 minutes, or an hour and 39 minutes.

Explanation:

It takes Emma 18 minutes to do 14 pages. That means that we can set up a proportion, where Emma uses 18 minutes to do 14 pages, which is equal to x minutes per page!

`(18)/(14) =(x)/(1)`

14x = 18

7x = 9

x = 9/7

So, each page takes 9/7 minutes for Emma to finish.

She will do 77 pages. 77 * (9/7) = 11 * 9 = 99.

So, it will take Emma 99 minutes, or an hour and 39 minutes, to type and spell check 77 pages.

Hope this helps!