Question

A sum of money becomes rs. 4500 after two years and rs. 6750 after 4 years on compound interest. Find the rate .

Answer 1

Answer:

Time 1 = 2 year

amount(A2) =Rs 6750

time 2 = 4years

let the rate% =R%

Principal= Rs p

A/q

4500= p ( 1+R/100)² .......(i)

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

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

6750/4500= (1+R/100)²...(iii)

From equation (i) & (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

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