Posted by Zayn on Thursday, October 4, 2012 at 8:26am.
Rahyu spent 2h 25 min in a library. She spent 30 min of the time reading newspapers. What percentage of her time in the library was spent reading newspapers? Round off your answer to the nearest whole number.

Maths  Reiny, Thursday, October 4, 2012 at 9:16am
2h 25 = 145 minutes , so
30/145 = .2068.. or appr 21%