the simple interest on a certain sum for 3 years at 8% per annum is rupees 96 more than the simple interest on the same sum for 2 years at 9% per annum find the sum . (answer is 1600)
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et the required sum be rs.x
SI on Rs.x at 8%per annum for 3 years
=Rs.(x×8×3/100)=Rs.6x/25
Si on rs.x at 9%per annum for 2 years
=Rs.(x×9×2/100)=Rs.9x/50
6x/25-9x/50=96
=>12x-9x=96×50
=>3x=96×50
=>x=96×50/3=1600
hence the required sumis Rs.1600
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The simple interest on a certain sum for 3 years at 8% per annum is Rs. 96 more than the simple interest on the same sum for 2 years at 9% per annum. Find the sum.
Let the required sum be Rs. x. Then,
SI on Rs. x at 8% p.a. for 3 years
SI on Rs. x at 9% p.a. for 2 years
Hence,
Hence, the required sum is Rs. 1600
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