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  • A alone can do a piece of work in 6 days and B alone in 8 days.
Question 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 Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
A. Rs. 375
B. Rs. 400
Feedback C's 1 day's work =1/3 - (1/6 + 1/8) = 1/3 - 7/24 =1/24
A's wages : B's wages : C's wages = 1/6 : 1/8 : 1/24 =4: 3 : 1
C's share (for 3 days) = Rs ( 3 x 1/24 x 3200) = Rs. 400.
C. Rs. 600
D. Rs. 800

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