Question

If you can buy 1⁄3 of a pound of salami for 5 dollars, how much can you purchase for 9 dollars?

Answer 1

$5 → 1/3 pound
$1 → 1/3 ÷ 5 = 1/3 x 1/5 = 1/15 pound
$9 → 1/15 pound x 9 = 9/15 pound = 3/5 pound