Question

IF MARY CAN PAINT 1/3 OF WALLS IN 25 MINUTES, HOW LONG WILL IT TAKE HER TO PAINT 3 WALLS?

Answer 1

225 minutes! :)

Explanation:

1/3wall for 25mins = 1wall for 25*3mins

based on the rate above, 3walls means 25*3*3mins.

25*3*3 = 225 mins.