Problema Solution
Jake can wallpaper a room in 10 hours and Maria can do it in 8 hours. What part of the job can they do by working together for 2hours?
Answer provided by our tutors
1/10 room per hour is Jake's rate
1/8 room per hour is Maria's rate
t = 2 hr the time they work together
2*(1/10) + 2*(1/8) = 9/20 of the job