Interest

If the ratio of Principal and Amount is 4:5, what is the rate of interest for 1 year?

A sum of money doubles itself in 5 years at CI. In how many years will it become 8 times?

What is the compound interest on Rs. 5000 for 1.5 years at 10% p.a. compounded semi-annually?

The simple interest on a sum is 1/9 of the principal. If the number of years is equal to the rate percent, find the rate.

If the population of a village was 10,000 two years ago and it increases by 10% annually, what is the current population?

Find the principal which amounts to Rs. 4410 in 2 years at 5% CI.

If Rs. 500 amounts to Rs. 600 in 2 years at SI, what will Rs. 1000 amount to in 2 years at the same rate?

Calculate the SI on Rs. 4500 at 8% p.a. for 73 days.

The difference between CI and SI on a certain sum at 10% for 2 years is Rs. 25. Find the sum.

If interest is compounded quarterly, the rate used in the formula is:

A sum of money at SI amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:

Find the CI on Rs. 10000 at 10% p.a. for 3 years, compounded annually.

At what rate percent per annum will a sum of money double itself in 10 years at SI?

If the compound interest on a sum for 2 years at 12.5% is Rs. 510, find the SI.

The value of a car depreciates from Rs. 5,00,000 to Rs. 4,00,000 in 1 year. Find the rate of depreciation.

In how many years will Rs. 1600 amount to Rs. 1852.20 at 5% p.a. CI?

What is the effective annual rate of interest corresponding to a nominal rate of 6% p.a. compounded semi-annually?

If SI on Rs. X at R% for T years is Rs. 100, then SI on Rs. 2X at R/2% for 2T years is:

If the population of a town increases by 10% in the first year and 20% in the second year, find the effective growth rate for 2 years.

Find the SI on Rs. 1200 from Jan 1st to March 14th (non-leap year) at 5% p.a.