Ravi invested certain sum at the rate of $10\%$ per annum compounded quarterly which amongst to $₹14,12,880.50$ at the end of one year. Find the sum.

In how many years a sum of $₹6400$, compounded quarterly at the rate of $5\%$p.a. will amount to $₹6561$?

A sum of $₹25000$invested at $8\%$ p.a. compounded semi-annually amounts to $₹28121.60$. Compute the time period.

Shayam deposited a sum of money in a bank for six months at the rate of $8\%$ interest component quarterly. He receives $₹303$as compound interest after six months. What amount did he deposit in the bank?

At what rate percent compound interest will the sum of $₹3200$ amount to$₹5529.60$ in $3$ years?

Mohit borrowed $₹8000$from Anwar at $11\%$ p.a. compound interest. After some time, he clear the amount by paying $₹9856.80$ to Anwar. For how much time did he keep the money?

The simple interest on a sum of money for $4$ years at $12\%$ per annum is $₹3600$. Find the compound interest on the same sum at the same rate for $1$ year, compounded half-yearly.

On a certain sum of money, lent out $16\%$ per annum, the difference between the compound interest for $1$ year, payable half-yearly and the simple interest for $1$ year is $₹56$. Find the sum.

Reena borrowed from Kamal certain sum for two years at simple interest. Reena lent this sum to Hamid at the same rate for two years compound interest. At the end of two years, she received $₹110$ as compound interest but paid $₹100$ as simple interest. Find the sum and the rate of interest.