The difference between C.I and S.I for 2 years is Rs. 9. Find the sum (in Rs.) if the rate is 15% per annum.

A sum of ₹ 400 amounts to ₹ 480 in 4 years. What will it amount to if the rate of interest is increased by 2 %? 

Simple interest accrued on an amount in 8 yr @ 12 % per annum is Rs 5520 What is the principal amount ?

What is the difference between the interest of Ram and Shyam in the given picture if Ram's money is on simple interest and Shyam's money is on compound interest.

Simple interest on an amount is Rs. 24 and true discount on the same is Rs. 20. The principal amount is

A man invested Rs.25000 on simple interest at R% p.a. If interest received by man is three twentieth of the principal after three years, then find ‘R’?

At the rate of 8 % simple annual interest, if an amount becomes Rs. 819 in 3 years and 3 months, then what was the original amount?

A takes a loan of Rs. 1500 from a bank at the rate of 10% simple interest for 3 years and lends to B at the rate of 15% for the same time period. Find the overall profit of A in the whole transaction.