Question 513832
Robil can do 2 jobs in 3 days, and Buray can do 5 jobs in 6 days. Robil works for 3 days and then Buray begins to help. How many days will it take to complete a total of 74 jobs?
Let x = time (days) to perform 74 jobs
then
x(2/3 + 5/6) = 74
multiply both sides by 6:
x(4 + 5) = 444
x(9) = 444
x = 444/9
x = 49.33 days
or
x = 49 days and 8 hours