The answer to the question
I agree with the comments. If you give an example, I will walk you through the steps to solve it.
Answer:
Bag of lemon
Step-by-step explanation:
Given that:
Cost of loose lemon = $0.99 for 2
Cost of bag of lemon = $2.50 for 6
Calculating the cost per 1 for loose and bag of lemon (unit cost) ;
Loose lemon :
$0.99 /2 = $0.495
Bagged lemon :
$2.50 / 6 = $0.4167
Hence, since the unit cost of bagged lemon is lesser than loose lemon, then purchasing a bag of lemon is better
You would simply add the 54 to the -12 and get +42
I can't help you on this because you don't have an actual answer