Carolyn and Kim are selling lemonade this summer.

Question

It costs 10 cents to make each cup of lemonade.

They are going to sell each cup of lemonade for 25 cents.

What is the least number of cups of lemonade they need to sell in order to collect $10.00 more than they spend?

PS: If they make 55 cups of lemonade, it will cost them $5.50.

Answer 1

profit = 25x - 10x, where x is the number they sell
= 15x

They want to make a profit of 1000
15x = 1000
x = 1000/15 = 66 2/3

So they must sell 67 cups

check:
for 67 cups:
revenue = 25(67) = 1675
expenses = 10(67) = 670
profit = 1675 - 670= 1005 cents or $10.05
for 66 cups
profit = 25(66) - 10(66) = $ 9.90 , which is not enough profit

so 67 cups is the minimum they must sell

Answer 2

67

Answer 3

I need help with this question

Answer 4

65