Question

Rosena bought an 8 pack of donuts to share with her friend at school. The donuts cost $28.00 all together. What is the unit rate for the donuts in $/donuts?

Answer 1

$3.5

28/8 = 3.5

Answer 2

$3.50/donut

Explanation:

Since Rosena bought an 8-pack of donuts for $28.00, we can say that the price of $28.00 corresponds with this pack.

The unit rate represents the price per donut, assuming a constant proportion.

The pack that Rosena bought contains 8 donuts. Therefore, to find the price of one donut, divide the price that corresponds with the 8-donut pack by 8, because
`8/ 8=1`.

The price of the 8-pack of donuts was
`\$28.00`. Diving by 8, we have:

`(\$28.00)/(8)=\boxed{\$3.50}`

Therefore, the unit rate for the donuts is $3.50/donut.