How to calculate AP Cost for foods & liquids

Question

[Item]
Frozen Yogurt

[No. Of Units]
2 L

[AP Cost]
$2.89

[Unit Cost]
0.072 per 50 ML

I need to find the unit cost.
The answer book says 0.072… how did it get that answer?

For reference the formula is:
Unit Cost = As Purchased Cost / Number of Units

I've tried the below: There is 0.05 L in 50 mL

0.05 L x 50 mL = 2.5 ( rounded ) = 3

Total cost = 2.89 / 2L = 1.445 (1.450)

50 mL = 50 mL / 2

2.89 / 50 = 0.0578 =

Answer 1

Start with your formula.

Unit Cost = As Purchased Cost / Number of Units

Apply the values that were given.

Unit Cost = $2.89/2 L = 2.89/2 $/L = 1.445 $/L

That answer is accurate, but the answer in the book is per 50 ML, not per 50 ML

You can convert the answer by multiplying it by 1, written in a convenient way, tp get rid of the L units on the bottom and replace it with a 50 ML units on the bottom. Note that (1 L/ 20*50 ML) = 1.

You also use the units as part of the math now.

Unit Cost = $2.89/2 L * (1 L/20*50 ML) = (289*1)/(2*20) $/ 50 MLL Unit Cost = 0.07225 $/ 50 ML