Question

at what rate percent per annum will a sum of ₹6250amountto₹7840 in 2years compounded anually​

Answer 1

Step-by-step explanation:

Given;P=6250,A=7840,T=2 yrs(n)

A=P(1+r/100)^n

7840=6250(1+r/100)^2

7840/6250=(1+r/100)^2

784/625=(1+r/100)^2

(28/25)^2=(1+r/100)^2

Square and square will be cancel from both sides we will get:

28/25=1+r/100

1 will go to second side

28/25-1=r/100

On taking L.C.M we will get

3/25=r/100

Now cross multiply it

25r=3×100

r=3×100/25

r=12%

I hope it helps you

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