On a sum Rina earn a interest of Rs. 1519 at S.I. in 7 years at 7% p.a. Find the sum.

The sum of money that will yield Rs. 60 as simple interest at the rate of 6% per annum in 5 years is-

A sum of money doubles itself in 7 years at simple interest. In how much time will it become 5 times of itself?

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At a simple interest Rs. 3050 becomes Rs. 4026 in four years. If the interest rate was increased by 4% how much would Rs.7500 become in four years ?

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Anshul borrowed Rs.24800 from Deepak at 8% p.a. simple interest for 4 years. He then added some more money to the borrowed sum and lent it to Rajeev for the same period at 10% p.a. If Anshul gains Rs. 5184 in the whole transaction, how much money did he add from his side?

At what rate per cent per annum will a sum of money double in 8 years?

In 5 years, the simple interest on an amount of Rs. X is $$2\over 5$$ of the principal. The rate of interest per annum is:

₹ 1,000 is invested at 5% per annum simple interest. If the interest is added to the Aprincipal after every 10 years, the amount will become 2,000 after