A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C  Answers:  A) Rs. 300  B) Rs. 400  C) Rs. 500  D) Rs. 600  E) None of these
Explanation:   C's 1 day's work =   1/3−(1/6+1/8)   =(1/3−7/24)   =1/24   A:Rs. 400:C=1/6:1/8:1/24   =4:3:1   C′sShare=1/8∗3200=400   Option Rs. 400
<result>B</result>
A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C