Maurice talked on the telephone to two friends. he talked to sherry for 1/4 hour,and to gabriel for 1/3 hour. how much time did maurice spend on the telephone?
well, 1/4 hour + 1/3 hour = 3/12 + 4/12 hours
= 7/12 hours
or
35 minutes
or
1/4 hour = 15 minutes
1/3 hour = 20 minutes
So he talked for 35 minutes