BIHAR CGL PRE INTEREST QUIZ - 13

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Question 1:

The population of a village decreases at the rate of $20 \%$ per annum. If its population 2 years ago was 10,000 , what is its present population?

Question 2:

0n what sum will the difference between the simple and compound interests for 3 years at 4 per cent per annum amount to Rs. $3.04$ ?

Question 3:

If the amount is $2.25$ times of the sum after 2 years at compound interest (compounded annually), the rate of interest per annum is

Question 4:

A sum is lent out for 2 years. The rate of interest is $4 \%$ for first year and $7 \%$ for the second year. If difference of the compound and simple interest is Rs.84. Find out the sum?

Question 5:

If the simple interest on Rs. $x$ at a rate of $a \%$ for $\mathrm{m}$ years is same as that on Rs. $\mathrm{y}$ at a rate of $a^{2} \%$ for $m^{2}$ years, then $x: y$ is equal to:

Question 6:

If a sum of money amounts to Rs. 2502 in 3 years and Rs. 3087 in $5.5$ years at the same rate of simple interest per annum. Then the rate of simple interest is?

Question 7:

At a certain rate of simple intrest Rs.900 becomes Rs. 1215 in 5 years, then find the rate of interest?

Question 8:

At certain rate of interest in certain time period Rs. 4,800 becomes Rs. 5,300  If rate of interest decreased by $15 \%$ and time period is thrice, what will be new amount?

Question 9:

In what time will Rs. 8000 , at $3 \%$ per annum, produce the same interest as Rs. 6000 does in 5 years at $4 \%$ simple interest is?

Question 10:

Monu receives simple interest 5/7 of the principal amount on an amount of Rs.28000 in 15 years from his friend. What is the rate of interest per annum?