A grocer buys 10 eggs for Rs.8,set up a linear equation with x representing the number of eggs and y representing the total cost in Rs. By reading the graph find :

1.The cost of 15 eggs

2.number of eggs for Rs.16

Given: x represents the number of eggs and y represents the total cost of eggs.

 Grocer purchase 10 eggs for Rs 8

 

∴ Cost price of 1 egg =

 

Hence, total cost of eggs = Number of eggs × Cost price of 1 egg

⇒ 10y – 8x = 0

⇒ 5y – 4x = 0

 

x52.50
y420

 

Using graph

(i) Cost of 15 eggs corresponds to 12 Rs.

(ii) Number of eggs for Rs. 16 correspond to 20 eggs.

 

Cheers!

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