Question

Kumar is opening a lemonade stand. He spent $4.50 to build the stand and $2.50 for lemons and sugar. He has enough ingredients to make 20 glasses of lemonade. How much should he charge for one glass of lemonade to cover his expenses and make $10 in profit? Round to the nearest cent. Kumar needs to charge $ a glass.

Answer 1

profit = revenue - cost

10 = 20x - (4.5 + 2.5)
10 = 20x - 7
10 + 7 = 20x
17 = 20x
17/20 = x
0.85 = x

check...
profit = revenue - cost
10 = 20(0.85) - 7
10 = 17 - 7
10 = 10 (correct)

so he would have to sell each cup at 0.85 ccents to make a profit of $ 10

Answer 2

Using proportions, it is found that Kumar needs to charge $0.85 a glass.

What is a proportion?

A proportion is a fraction of total amount, and the measures are related using a rule of three.

In this problem, to make a profit of $10, he must earn $17 selling 20 glasses. How much should he charge for 1 glass?

The rule of three is:

$17 - 20 glasses

$x - 1 glass

Applying cross multipliction:

$20x = 17$

$x = \frac{17}{20}$

$x = 0.85$.

Kumar needs to charge $0.85 a glass.

More can be learned about proportions at https://brainly.com/question/24372153