A and B undertake to do a piece of work for Rs.100. A can do it in 5 days and B can do it in 10 days. With the help of C, they finish it in 2 days. How much should C be paid for his contribution?
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A ONE DAY WORK IS 1/5
B ONE DAY WORK IS 1/10
ALL TOGETHER ONE DAY WORK (A+B+C)=1/2
1/5+1/10+1/C=1/2
3/10+1/C=1/2
1/C=1/5
C CAN DO WHOLE WOTK IN 5 DAYS
WORKING DAYS 5:10:5
AMOUNT SHARE IS RECIPROCAL OF WORKING DAYS 1/5:1/10:1/5
WE GET 2:1:2
C GET2/5*100=40 RUPEES
B ONE DAY WORK IS 1/10
ALL TOGETHER ONE DAY WORK (A+B+C)=1/2
1/5+1/10+1/C=1/2
3/10+1/C=1/2
1/C=1/5
C CAN DO WHOLE WOTK IN 5 DAYS
WORKING DAYS 5:10:5
AMOUNT SHARE IS RECIPROCAL OF WORKING DAYS 1/5:1/10:1/5
WE GET 2:1:2
C GET2/5*100=40 RUPEES
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