Question

A bank gives $10$% S.I on deposits for senior citizens. Draw the graph for the relation between the sum deposited and the interest earned for one year. Hence find
(i) the interest on the deposit of Rs.$650$
(ii) the amount to be deposited to earn an interest of Rs.$45$.

Answer 1

Let us form the following table:

Deposit

Rs.$x$ $100$ $200$ $300$ $400$ $500$ $600$ $700$

S.I earned

Rs.$y$ $10$ $20$ $30$ $40$ $50$ $60$ $70$

Clearly, $y=\frac{1}{10}x$ and the graph is a straight line.

Draw the graph using the points given in the table. From the graph, we see that

(i) The interest for the deposit of Rs.$650$ is Rs.$65$

(ii) The amount to be deposited to earn an interest of Rs.$45$ is Rs.$450$.