Question

A certain amount to rupees 3825 in 4 years and to rupees 4050 in 6 years. Find the rate percent and the sum.

Answer 1

Answer:

Solution:-

Simple interest for 2 years = Rs. 4050 - Rs. 3825 = Rs. 225

And simple interest for 4 years = Rs. 225*2 = 450 Rs.

So, Principal = Rs. 3825 - Rs.450 = Rs. 3375

Now,

Simple interest = (P*R*T)/100

450 = (3375*R*4)/100

13500R = 45000

R = 45000/13500

Rate of interest = 10/3 %

Therefore, Rate of interest is 10/3 % and Principal is Rs. 3375

Answer.