If A had worked alone he would have taken 63 hours to do the task. What is B’s share

If A had worked alone he would have taken 63 hours to do the task. What is B’s share, if A and B together on a task finishing it in 36 hours and they get paid Rs. 9275 for it?

(a) Rs. 3951

(b) Rs. 3975

(c) Rs. 3999

(d) Rs. 4056

Sol: