the cost of 3 notebooks and 2 pencils is 5.10 at the same prices/ The cost of 2 notebooks and 3 pencils is 4.65. What is the total cost of 1 notebook and 1 pencil?

Answer 1

Let n represent the cost of 1 notebook.

Let p represent the cost of 1 pencil.

3n + 2p = 5.10

2n + 3p = 4.65

The total cost of 1 notebook and 1 pencil is simply n + p. The quickest way to proceed is to add the two equations together:

5n + 5p = 9.75

Divide both sides by 5 to get:

n + p = 1.95, ans.