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ICSE Class 8 Answered

Simple interest on a certain sum is 9/16 of the sum.find the rate percent and the time both are numerically equal  
Asked by subashnayak | 22 Sep, 2019, 06:45: PM
answered-by-expert Expert Answer
Let P be the sum invested at a simple interest rate r and n be the time for which the sum is invested.
According to the question,
r = n and Simple intrest = 9/16 × P
Simple intrest = 9/16 × P
Pnr/100 = 9/16 of P
nr = 900/16
r2 = 900/16                 n = r
r = 7.5%
Hence, n = 7.5 years
Answered by Sneha shidid | 23 Sep, 2019, 09:04: AM

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