Kristi and rebecca sell lemonade on the corner for $0.50 per cup. it costs them $0.10 to make each cup. on a certain day, their producer surplus is $20. how many cups did kristi and rebecca sell?
a. 40.
b. 200.
c. 8.
d. 50.
Your initial profit is $0.40, considering you spend $0.10 making each cup, and charge $0.50 per cup. If Kristi and Rebecca earned $20, you have to divide their profit by the overall earnings.
