It will take 48 minutes to proofread 96 pages. Since you can proofread 12 pages in 6 minutes, you can proofread 96 pages in 48 minutes (12 pages x 8 = 96 pages).
6
96/12 = 8 and 8 times 6 = 48 minutes
12 pages in 6 minutes = 2 pages per minute. 96 pages at 2 pages per minute = 96/2 = 48 minutes.
Since it takes her 1 minute to proof 2 pages, divide 96 by 2. 48 minutes.
It will take 96/12 = 8 and 8 times 6 = 48 minutes
36
6
Three-and-a-bit
If 100 pages are printed in 5 minutes, then 50 pages would take half the time, which is 2.5 minutes.
It will take 48 minutes.
6. One typist types one page in two minutes.
If everyone types at the same rate, three.