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2 .A alone can complete a work in 18 days and B alone in 15 days. B alone worked at it for 10 days and then left the work. In how many more days, will A alone complete the remaining work ?

(A) 5 days

(B) 5$1\over2# days

(C) 6 days

(D) 8 days

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3 .Tapas works twice as fast as Mihir. If both of t hem together complete a work i n 12 days. Tapas alone can complete it in–

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4 .A sum of money becomes double in 3 years at compound interest compounded annually. At the same rate, in how many years will it become four times of itself ?

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5 .At some rate of simple interest, A lent ` 6000 to B for 2 years and ` 1500 to C for 4 years and received ` 900 as interest from both of them together. The rate of interest per annum was –

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6 .

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7 .The number of cycles produced in the 5 th week is –

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8 .Total number of cycles produced in five consecutive weeks is –

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9 .Find the ratio of cycles produced in fourth week and third week.

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10 .Find the difference of cycle produced in the second week and fourth week

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