Question

Joanne read every week for 4 weeks straight. she read 12 hours one week 480 minutes the second week 6.5 hours the third week and 750 minutes the fourth week which week did she read the most? how long did she read in all

Answer 1

She read 12.5 hours in the fourth week, so that's the most. 
(Either one is right) =
In all 4 weeks she read 39 Hours or 2340 minutes.
Hope this is correct and it helps.

Answer 2

Week #1 : 12 hours
Week #2 : 480/60 = 8 hours
Week #3 : 6.5 hours
Week #4 : 750/60 = 12.5 hours

total = 39 hours for all four weeks

in the 4th week she read the most