Question

Heidi can proofread 26 files in an hour, while Sarah can proofread 49 files in an hour. If they have 550 files to proofread , how much time will it take them between the two of them.

Answer 1

7 hours and 30 minutes

Explanation:

26+49 files/hour

=75 files/hour

550/75=time (hours)

=7.33 h

minutes conversion of decimal=0.33 times 60

=7 hours and 20 minutes