From the graph, let us find out the answers of the following questions:

(a) Let us write the relation between cost price and selling price by observing the graph.

(b) Let us write the selling price if the production cost of the jute bag is Rs. 60

(c) Let us write the production cost if the selling price of the jute bag is Rs. 125 by observing the graph.

(d) Let us calculate and write the percentage profit/loss from the graph.

(e) Let us write the percentage profit/loss on selling price from the graph.

Formula used.

Loss/profit percent = × 100

(a). If we take point (40,50)

We get

40y = 50x

4y × 10 = 5x × 10

∴y= × x

(b). If productive cost of jute is Rs. 60

Then x= 60

y = ×60

y = =Rs. 75

(c). By watching graph

We can see that having y =Rs. 125

Where line crosses at point having x = Rs. 100

∴ Cost price will be Rs. 100

(d). For writing Profit %

Let’s take point (40,50)

Where cost price = Rs. 40

Profit = Selling price – Cost price

= 50 – 40 = 10

Loss/profit percent = × 100

Profit % = × 100

=25%

(e). For writing Profit % on selling price

Let’s take point (40,50)

Where cost price = Rs. 40

Profit = Selling price – Cost price

= 50 – 40 = 10

Loss/profit percent on selling price = × 100

Profit % on selling price= × 100

=20%