a sum of money is invested at compound interest payable anually .The interest in two successive years is rupees 225 and rupees 240 .find :1.the rate of interest ..2.the orignal sum..3.the interest earned in the third year
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A= P(1+r/100)n
225=240(1+r/100)2
225/240=(201r/200)
45/48=201r/200
15/16=201r/201
225=240(1+r/100)2
225/240=(201r/200)
45/48=201r/200
15/16=201r/201
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