Which is the better deal:
$2.50 dollars for 3.2 ounces, or $1.00 for 1.2 ounces.
compare the prices and weights using percent to decide which is the better buy.

$2.50 for 3.2 oz. is the better buy. multiply 1.2 by 8/3 to get 3.2 oz, which you will have to multiply $1.00 by 8/3 to get $2.67. So $1.00 for 1.2 oz is the equivalent of $2.67 for 3.2 oz.

The answer to your question is 1/9