Question

Petra always keeps her 6 bedrooms in her house clean it takes her 15 minutes to clean a single room how many hours will it take her to clean all 6 bedrooms

Answer 1

90 minutes(1hour 30 minutes)

Explanation:

If 1 room=15 minutes

Then 6 rooms= ?

=6×15/1

=90 minutes

=1hour 30 minutes