Abhishek and Deepanshi undertake to do a piece of work for ₹1,000. Abhishek alone can do it in 5 days and Deepanshi alone can do it in 10 days. With the help of Chitransh, they finish it in 2 days. How much should Chitransh be paid for his contribution?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. ₹400.
Abhishek's 1-day work = 1/5
Deepanshi's 1-day work = 1/10
All three's 1-day work = 1/2
1/5 + 1/10 + x = 1/2 → 3/10 + x = 1/2 → x = 1/5
Chitransh's 2-day work = 2 × 1/5 = 2/5
Chitransh’s share = 2/5 × ₹1000 = ₹400