CLAT 2017 Question Paper with answer key for online practice

Question : 109 of 200

Marks: +1, -0

A can do a piece of work in 8 days and B alone can do the same work in 10 days. A and B agreed to do the work together for Rs. 720. With the help of C, they finished the work in 4 days. How much C is to be paid?