Question

3 pencils cost £2.25.
How much do 7 pencils cost

Answer 1

Answer:

and are integers. Write down one ... Verify that = 18 and = −3 is a solution to both these equations. ... 7 The cost of three pens and one rubber is £2.25 ... Work out how much one pen costs and how much one rubber costs.

Answer 2

Explanation:

3 pencil cost = 2.25 rs

therefore 1 pencil cost = 2.25 / 3 = 0.75

hence , 7 pencil cost = 0.75 × 7= 5.25 rs .