A person deposited ₹500 for 4 years and ₹ 600 for 3 years at the same rate of simple interest in a bank. Altogether he received ₹ 190 as interest. The rate of simple interest per annum was 

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.

A person borrows 5,000 for 2 years at 4 % per annum simple interest. He immediately lends it to another person at per annum simple interest for 2 years. His gain in this transaction is 

Rs. 1,080 invested for 3 months gave an interest of Rs. 27. The simple rate of interest per annum was :

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’?

The principal which gives ₹ 1 interest per day at a rate of 5 % simple interest per annum is 

The difference of simple interest from two banks on ₹8,000 in 3 years is ₹800. If the rate of interest per annum in two banks are R1 and R2, then what is the value of R1 - R2? (Where R1 > R2)

A person invested some amount at the rate of 12 % simple interest and a certain amount at the rate of 10 % simple interest for 1 year. He received yearly interest of Rs. ₹ 130, but if he had interchanged the amount invested, he would have received 4 more as interest. How much did he invest at 12 % simple interest?