1. Deepanshu lent Rs. 8400 to Jaipal for 15 years and Rs. 5100 to Kareem for 14 years on simple interest at the same rate of interest and received Rs. 17766 in all from both of them as interest. The rate of interest per annum is
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By: anil on 05 May 2019 02.14 am
rate of interest per annum = $$r\%$$ Sum lent to Jaipal = Rs. 8400 for 15 years and Rs. 5100 to Kareem for 14 years Simple interest = $$frac{P imes R imes T}{100}$$ => Total interest = $$(frac{8400 imes r imes 15}{100}) + (frac{5100 imes r imes 14}{100}) = 17766$$ => $$1260r + 714r = 17766$$ => $$1974r = 17766$$ => $$r = frac{17766}{1974} = 9\%$$ => Ans - (D)
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