Problema Solution
Jake can wallpaper a room in 10 h and Maura can do it in 8 h. What part of the job can they do by working together for 2.5 h? for h h?
Answer provided by our tutors
1/10 + 1/8= 9/40
so, they need 40/9 hours to complete the job.
in 2.5 hours work = 2.5 * 9/40 = 9/16 the part.