Question

Ahmad bought 5 ounces of salad greens for $4.00. What was the unit price per pound of the salad greens?(1 pound = 16 ounces) A.$7.20 B.$8.00 C.$12.80 D.$20.00 why would C be the answer

Answer 1

C.
`12.80\:dollars`.

Explanation:

It was given that,

"Ahmad bought 5 ounces of salad greens for $4.00".

But it was given that, (1 pound = 16 ounces)

We need to convert 5 ounces to pounds.

If 1 pound = 16 ounces, then

`1\:ounce=(1)/(16)\:pounds`

This implies that, 5 ounces

`5* 1\:ounce=5* (1)/(16)\:pounds`

`\Rightarrow 5\:ounces=(5)/(16)\:pounds`

The unit rate per pound is

`=4\:dollars / (5)/(16) \:pounds`.

We multiply by the reciprocal of the second fraction to get,

`=4* (16)/(5)`.

`=(64)/(5)`

`=12.80\:dollars`.