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31 May, 13:01

Amir lent Rs. 600 to hameed for 2 years and Rs. 150 to aman for 4 year and received altogether from both Rs. 90 as simple interest. the rate of interest is.

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  1. 31 May, 13:04
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    Interest = Pin = principal * interest rate * number of years

    Let interest rate be i, then

    600*i*2+150*i*4=90

    1200i+600i = 90

    i=90 / (1200+600) = 90/1800=1/20=0.05 or 5%
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