Q206
A, B and C can complete a piece of work in 10, 12 and 15 days respectively. A left the work 5 days before the work was completed and B left 2 days after A had left. Number of days required to complete the whole work was ?
A.
5 days
B.
6 days
C.
8 days
D.
7 days
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
L.C.M. of total work = 60One day work of A = = 6 unit/day
One day work of B = = 5 unit/day
One day work of C = = 4 unit/day