Answer: Ben completes 3/10 of his book report per hour
Step-by-step explanation:
Ben completes 1/4 of his book report in 5/6 of an hour
5/6 of an hour = 5/ 6 x 60 = 50 minutes
Therefore in 1 hour, which is = 60 minutes he completes
(1/4 x 60 minutes)/ 50 minutes
= 15/ 50
= 3/10 of his book report.