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ICSE Class 8 Answered

If a certain sum of money earns Rs. 16,200 as interest at 9%p.a. over a period of time, how much interest will it earn at 11%p.a. over the same period of time? 
Asked by Cl_narayan | 11 Aug, 2019, 02:12: PM
answered-by-expert Expert Answer
Let the principal be x Rs. and period be y years
rightwards double arrow 16200 equals fraction numerator x cross times y cross times 9 over denominator 100 end fraction rightwards double arrow x y equals fraction numerator 16200 cross times 100 over denominator 9 end fraction N o w comma space a t space 11 percent sign space i n t e r e s t space p. a. I equals fraction numerator x cross times y cross times 11 over denominator 100 end fraction equals fraction numerator 16200 cross times 100 over denominator 9 end fraction cross times 11 over 100 equals 1800 cross times 11 equals R s. space 19 comma 800
Answered by Renu Varma | 12 Aug, 2019, 11:59: AM

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