Posted by Steven on .
Rob practiced 3/5 of his music in 25 minutes. About how long did it take him to practice all his music?

Math 
Ms. Sue,
(3/5)25 = (5/5)x
3/5x = 25
x = 25 / 3/5
x = 25 * (5/3)
x = 125 / 3
x = 41.67 or about 42 minutes