Question

Which of the following is the best buy?

12 pens for $1.56
15 pens for $1.65
9 pens for $1.35
18 pens for $2.52

Answer 1

B

Explanation:

It cannot be D, because it costs way more, it cannot be C because there are other options that provide better value. We can finally determine that it is B because for 3 pens more it is only 9 cents more