9) If the difference between the simple interest and compound interests onsome principal amount at 20% for 3 years is Rs. 48, then the principalamount isa) Rs. 365b) Rs. 325c) Rs. 395d) Rs. 375

10) Andrews earns an interest of Rs. 1596 for the third year and Rs. 1400 forthe second year on the same sum. Find the rate of interest if it is lent atcompound interest.

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11) The population of a town is 40,000. It decreases by 20 per thousand peryear. Find out the population after 2 years.a)38484b)38266c)38416d)3822612) The compound interest on a sum for 2 years is Rs. 832 and the simpleinterest on the same sum for the same period is Rs. 800. The differencebetween the compound and simple interest for 3 years will be

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13) John invested money in two schemes A and B offering compound interest@ 5 p.c.p.a. and 10 p.c.p.a. respectively. If the total amount of interestaccrued through two schemes together in two years was Rs. 2075 and thetotal amount invested was Rs. 15,000, find out the amount invested inScheme A?

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