Question
Rs.500 was invested at 12% per annum simple interest and a certain sum of money invested at 10% per annum simple interest. If the sum of the interest on both the sum after 4 years is Rs.480, the latter sum of money is :
Answer: Option D
Answer: (d)Using Rule 1,Simple interest gained from Rs.500= ${500 × 12 × 4}/100$ = Rs.240Let the other Principal be x.S.I. gained = Rs.(480 - 240) = Rs.240${x × 10 × 4}/100$ = 240$x = {240 × 100}/40$ = Rs.600
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Answer: (d)Using Rule 1,Simple interest gained from Rs.500= ${500 × 12 × 4}/100$ = Rs.240Let the other Principal be x.S.I. gained = Rs.(480 - 240) = Rs.240${x × 10 × 4}/100$ = 240$x = {240 × 100}/40$ = Rs.600
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