if i buy a 16 ounce box if cereal for $4.00 or a 24- ounce box of the same cereal for $4.80 . which box would costs less per ounce ?

Answer 1

Hi Aryana,

You can use equivalency and unit rates to find the cost of one ounce using each of the prices.

For the first option:

$4.00 = x

16 ounces 1 ounce

$4.00 ÷ 16 = x

16 ounces ÷ 16 1 ounce

x= $0.25 for 1 ounce

For the second option:

$4.80 = x

24 ounces 1 ounce

$4.80 ÷ 24 = x

24 ounces ÷ 24 1 ounce

x= $0.20 for 1 ounce

The second option($4.80 for 24 ounces) would cost less per ounce.