Problema Solution
Helene can deliver papers on a particular route in 5 hours. Together she and Joanne can deliver papers on the same route in 2 hours. How long would it take Joanne to deliver the papers alone?
Answer provided by our tutors
1/5 + 1/x = 1/2
1/x = 1/2 - 1/5
1/x = 3/10
so we get x = 10/3
Joanne deliver in 10/3 minutes convert to decimals iff needed.