Question

If James can swim 10 laps in 23 minutes, what would be his expected time for 15 laps?

Answer 1

You can use a proportion.

10 laps is to 23 minutes as 15 laps is to x minutes

10/23 = 15/x

10x = 15 * 23

10x = 345

x = 34.5

Answer: 34.5 minutes

Answer 2

Correct, the person is correct