Question

Find the rate per cent annum,if compounded yearly
(i)Principal=₹196,Amount=₹225,
Time=2 years
(ii)Principal=₹3136,Compound
interest=₹345,Time=2 years​

Answer 1

Step-by-step explanation:

Find the rate per cent annum,if compounded yearly

yearly(i)Principal=₹196,Amount=₹225,Time=2 years(ii)Principal=₹3136,Compound interest=₹345,Time=2 years..

Formula : A=P(1+r)^t

Formula : A=P(1+r)^t3481=3136(1+r)^2\frac{3481}{3136}=(1+r)^2\sqrt{\frac{3481}{3136}}=1+r\sqrt{\frac{3481}{3136}}-1=r0.0535=rRate of interest = 5.35%

Answer 2

Answer:

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