Question

From the graph, what is the profit earned when the number of items sold is 2000?

• A. 2000

Answer 1

The correct option is A 2000
Let us look at the graph.


Consider the two points (100,500) and (200,1000).

Now, comparing the ratio of profit earned to number of items sold, we get,

Constant of Proportionality = $\frac{\text{Profit earned in dollars}}{\text{Number of items sold}}$

$\Rightarrow \frac{\text{c}}{\text{n}}$ $=\frac{500}{100}=\frac{1000}{200}$

$\Rightarrow \frac{\text{c}}{\text{n}}=5$

or, $\text{c}=\text{5n}$

Now, number of items sold, (n) =2000.

∴ When the number of items sold is 2,000, then the profit will be $5\times 2,000$ = ₹10,000.