Question

A sum becomes for rs 4500 after 2 years and rs 6750 after 4 years at compound interest.the sum is

Answer 1

"Given Time 1 = 2 year

Amount (A2) =Rs 6750

Time 2 = 4years

Let the rate% =R%

Principal= Rs p

According to the question,

4500= p ( 1+R/100)² .......(i)

6750= p(1+R/100) power 4 .......(ii)

By adding equation (ii) by the equation...(i)

6750/4500= (1+R/100)²...(iii)

From equation (i) and (ii)

4500= P*3/2

P = 4500*2/3

Now we divide 4500 by 3 we get 1500

then 1500 *2=3000

we get principal =3000

and the C.I = 4500

"