Problema Solution
Isis can paint her garage in 1 hour and 15 minutes. If Jerry helps her, they can paint the garage in 45 minutes. How long would it take Jerry to paint the garage by himself?
Answer provided by our tutors
Isis can paint in 1.25 hours.
So, in 1 hour Isis can do 1/1.25 work
In 1 hours both can do 1/0.75 work
So, In 1 Hour Jerry can do 1/0.75 - 1/1.25 work
so, Jerry takes 1.875 hours = 1 hours 53 minutes