Question
A man invested Rs. 's' in scheme 'G' offering simple
interest at 8% for 5 years and Rs. 2,200 in scheme 'H' offering simple interest at 9% for 4 years. If the total interest earned from both schemes is (s + 800), then find the total interest earned from scheme 'G'.Solution
ATQ, Simple interest = Sum X rate of interest X time period in years ÷ 100 Interest earned from scheme 'G' = s X 8 X 5 ÷ 100 = Rs. '0.4s' And interest earned from scheme 'H' = 2200 X 9 X 4 ÷ 100 = Rs. 792 Or, 0.4s + 792 = s + 800 Or, 0.4s = 8 Interest earned from scheme 'G' = 0.4s = Rs. 8
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