Shyam Saraf and Abhilasha Swarup Solutions for Exercise 1: EXERCISE

The C.I. on a sum of money for $2$ years is $Rs. 210$, and S.I. on the same sum at the same rate and for the same time is $Rs. 200$. Find the rate percent.

Purnima lent some money to Anuj at a certain rate for $4$ years. She would have fetched $Rs. 240$ more had the interest been $4\%$ higher. Find the sum Anuj borrowed.

If the rate of compound interest is $6.66\%$, find the ratio of compound interest earned in the $46$th year to the $45$th year.

Rohit and Rajan are two brothers with ages $18$ years and $16$ years, respectively. In what ratio must they invest money at $5\%$ compounded yearly, so that each may get the same sum at the age of $24$ years.

Find the compound interest on $Rs. 16000$ at $20\%$ per annum for $9$ months compounded quarterly.

Find the principal if the interest compounded at the rate of $20\%$p.a. for $2$ years is $₹1,760$.

The difference between C.I. and St for 2 years on a certain sum at 5% p.a. was 2 240. Find the principal.

The S.l. on a sum of money is $\frac{1}{9}$ of the principal and the number of years is equal to the rate of interest p.a. Find the rate of interest p.a.