Question

You had $20 to spend on 3 pencils. after buying them you had $14. How much did each pencil cost?

Answer 1

Set up your equation:
$20 - $14 = $6

$6 were spent on all 3 pencils, now divide:

$6 / 3 = $2 per pencil

Answer 2

You paid 15 cent because 3 divided by 20 is 0.15