X,Y and Z can do a piece of work in 4 days, 5 days and 7 days, respectively. They get Rs. 415 for completing the work. If X, Y and Z have worked together to complete the work, what is X's share?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. Rs.175.
Total combined work rate = (1/4 + 1/5 + 1/7) = 83/140
X's share ratio = (1/4)/(83/140) = 35/83
X's earnings = (35/83) × 415 = 175