X and Y can complete a task in 15, 10 days respectively. After the two of them worked together for 3 days X joined Z instead of work. If all the work is completed in the next 4 days, how many days can Z alone complete the work?
Answers
Answered by
0
Step-by-step explanation:
work done by x and y in 3 days
= 3/15 + 3/10 = 1/2
Work done by x in 4 days
= 4/15
work done by Z in 4 days = 1/2 – 4/15 = 7/30
7/30 portion of work done in 4 days
he whole work will be done in 120/7 = 17 1/7 days.
Similar questions