Simple and Compound Interest Set 2

Vithya gave Rs.20000/- to Priya for 5 years and Rs.30000/- to Vijay for 2 years. If the rate of interests is the same and she received Rs.12800- as SI from both. What is the rate of interest?

The difference between CI and SI on the same sum for 2 yrs at the rate of 25% pa is Rs.1500. What is the principal lent out in each case ?

A man took a certain sum as loan from bank at a rate of 9% SI per annum. The man lends the same amount to another person at 15% SI per annum. If at the end of 4 years man made a profit of Rs. 9000 from the deal. What was the original sum ?

If the difference between CI and SI earned on a certain amount at 15% pa at the end of 3 years is Rs.3200, find out the principal.

What will be the ratio of simple interest earned by certain amount at the same rate of interest for 8 years and that for 12 Years?

At what rate per cent per annum will be simple interest on a sum of money be 3/5 of the Principal amount in 6 years?

A sum of money becomes 7/4 of itself in 5years at a certain rate of interest. What is the rate of interest?

A sum of money lent out at SI amount to Rs.7000 after 2 years and Rs.14000 after a further period of 5yrs. Find the principal ?

In what time will Rs.3500 become Rs. 4700 at 4(1/5)%pa SI ?

Niharika borrows Rs.10000 for 2 years at 4% p. Simple interest. She immediately lends money to Girish at 50/4% p. for 2 years. Find the gain of 1 year?