Question

The price of a package of 4 pens is $8.00. The same pens are sold at $2.50 each. If Alex bought three packages of pens rather than buying 12 pens individually, the amount he saved on 12 pens is what percent of the amount he paid?

A) 12%
B) 20%
C) 25%
D) 30%

Answer 1

He paid:

8 ∙ $3 = $24

If same pens are sold at $2.50 each then price of 12 pens = 12 ∙ $2,5 = $30

He saved:

$30 - $24 = $6

percent:

( $6 / $30 ) ∙ 100% = 0.2 ∙ 100% = 20%

Answer 2

He paid:

3 ∙ $8 = $24