If two typists can type two pages in five minutes, how many typists will take it to type twenty pages in ten minutes?
Answer: 10
Explanation
Let's break it down:
2 typists can type 2 pages in 5 minutes, so:
2 typists can type 4 pages in 10 minutes.
To type 20 pages in 10 minutes, we'll need:
20 pages / 4 pages = 5 times more typists
Since 2 typists can type 4 pages, we'll need:
2 typists × 5 = 10 typists