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Question

The table below shows the relation between the amount deposited and the simple interest earned.

Sum deposited (in ₹) |
100 | 200 | 300 | 500 | 1000 |

Simple interest (in ₹) |
10 | 20 | 30 | 50 | 100 |

Find the investment one has to make for an interest of ₹70.

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Solution

The correct option is **A** ₹700

From the data given, the simple interest obtained is dependent on the sum deposited. So, 'simple interest' is the dependent variable and 'sum deposited' is the independent variable.

On graph, dependent variables are represented on the y-axis and indepedent variables, on x-axis.

So, the given table can be represented as: (100,10), (200,20), (300,30), (500,50), (1000,100).

Plotting the points on the graph,

From the graph, we observe that:

₹700 has to to be invested to get an interest of ₹70.

From the data given, the simple interest obtained is dependent on the sum deposited. So, 'simple interest' is the dependent variable and 'sum deposited' is the independent variable.

On graph, dependent variables are represented on the y-axis and indepedent variables, on x-axis.

So, the given table can be represented as: (100,10), (200,20), (300,30), (500,50), (1000,100).

Plotting the points on the graph,

From the graph, we observe that:

₹700 has to to be invested to get an interest of ₹70.

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