Charmaine bought n packs of pencils. Each pack has 15 pencils. Write an equation to represent the total number of pencils p that Charmaine bought.

Answer 1

Let's say she bought 2 packs. Then she would have bought 2(15) or 30 pencils, that is multiply the number of packs by 15.

It is given that she bought "n" packs, so an algebraic expression representing the number of pencils is 15n.

If the variable p is used to represent the number of pencils purchased then the equation is:

p = 15n

So 1 pack, 15(1) = 15 pencils.

2 packs = 15(2) = 30 pencils

...

10 packs, 15(10) = 150 pencils.