# CDS MATHS QUIZ

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## Question 1:

A sum of ₹ x becomes ₹ 8,283 after 3 years and ₹ 10,527 after 7 years at the same rate of simple interest per annum. What will be the value (in ₹) of $x$?

## Question 2:

A sum fetched a simple interest of ₹ 3,040 at the rate of 8 %.p.a. in 5 years. What is the sum ?

## Question 3:

Rakesh lent out Rs 8000 for 5 years at $15 \%$ per annum and borrowed Rs 6000 for 3 years at $12 \%$ per annum. How much did he gain or lose?

## Question 4:

At what rate of simple interest per annum will a sum triple itself in 30 years? [Give your answer correct to 2 decimal places.]

## Question 5:

Ms. Revathi borrowed Rs. 600 at 6% per annum simple interest. What (in rupees) will she pay to clear her debt after 4 years?

## Question 6:

The simple interest on a certain sum of money for 2 years at 12% per annum is ₹ 60 less than the simple interest on the same sum for 3 years at 10% per annum. The sum (in ₹) is:

## Question 7:

Find the period when simple interest on Rs. 4000 at 6% per annum will be Rs. 400 .

## Question 8:

The simple interest (in ₹) on ₹ 8,000 for 6 months at the rate of 12 paise per rupee per month is:

## Question 9:

An amount invested at simple interest gives Rs. 2000 interest at rate of $10 \%$ in 4 years. What is the principal $(\operatorname{in} Rs.)$ ?

## Question 10:

Rs. 13,500 becomes Rs. 14,200 at $x \%$ p.a. in 11 years. If rate of interest become $(x-0.5) \%$ p.a. What will be amount?