1.  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 ₹ 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
A. ₹ 375
B. ₹ 400
C. ₹ 600
D. ₹ 800

Answer: Option B

Explanation:

C's 1 day's work = 1 - 1 + 1 = 1 - 7 = 1 .
3 6 8 3 24 24

A's wages : B's wages : C's wages

= 1 : 1 : 1 = 4 : 3 : 1.
6 8 24

C's share (for 3 days)

= ₹ 3 x 1 x 3200 = ₹ 400.
24