Question
The interest received on investing Rs. (8p + 400) on
simple interest at 5% p.a. for 8 years is Rs. (3p + 240). Find the ratio (p + 100) :(p + 600)Solution
Simple interest = Principal X rate X time ÷ 100 So, 3p + 240 = (8p + 400) X 5 X 8 ÷ 100 Or, 3p + 240 = 3.2p + 160 Or, 0.2p = 80 Or, 'p' = 400 Required ratio = (400 + 100) :(400 + 600) = 500:1000 = 1:2
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