Q337
25 persons can complete a work in 60 days. They started the work. 10 persons left the work after x days. If the whole work was completed in 80 days, then what is the value of x?
A.
8
B.
15
C.
30
AnswerD.
9
Answer: Option C
Solution
Answer: Option C
Solution:
Total work = 25 × 60 = 1500x × 25 + (80 - x) × 15 = 1500
25x - 15x + 1200 = 1500
10x = 300
x = 30