Question

Kelsey painted 1/4 of her bedroom in 3/7 of an hour at this rate how long would it take her to paint the entire room

Answer 1

1/4 of the room was painted in 3/7 hour.

1    of the room would be painted in:  (3/7) / (1/4)

= 3/7 *4/1  = 12/7 hour.

It would be done in 12/7 hour.