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Important Formulas

Problems on Time and Work

Q31. A and B can finish a piece of work in 30 days. They worked at it for 20 days and then B left. The remaining work was done by A alone in 20 more days. A alone can finish the work in
(a) 47 days
(b) 52 days
(c) 60 days
(d) 72 days

Q32. A and B undertook to do a piece of work for Rs. 4500. A alone should do it in 8 days and B alone in 12 days. With the assistance of C they finished the work in 4 days. C's share of money is
(a) Rs. 695
(b) Rs. 710
(c) Rs. 750
(d) RS. 800



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