1. An equal amount of sum, Rs. P is invested in scheme A and scheme B. Both the schemes A and B offer simple interest at the rate of 12% and 9% respectively. If at the end of two years total amount received from both the schemes together was Rs. 21,780/-, what is the value of P ?
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By: anil on 05 May 2019 01.20 am
Amount in scheme A at 12% S.I. = $$frac{P imes 12 imes 2}{100} + P$$ = $$frac{24P}{100} + P = frac{124P}{100}$$ Amount in scheme B at 9% S.I. = $$frac{P imes 9 imes 2}{100} + P$$ = $$frac{18P}{100} + P = frac{118P}{100}$$ Acc to ques, => $$frac{124P}{100} + frac{118P}{100} = 21,780$$ => $$242P = 21,780 imes 100$$ => $$P = frac{21,78,000}{242}$$ => $$P = Rs. 9,000$$
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