Suppose that Irina is prepared to pay a maximum of $2.40 for her first glass of cranberry juice,but for each subsequent glass she is only prepared to pay 20 cents less than the previous one.
-Refer to the above information to answer this question.If the price of cranberry juice is 80 cents per glass,how many glasses will she purchase?
A)3 glasses.
B)8 glasses.
C)9 glasses.
D)10 glasses.
E)Cannot be determined.

Question

Quizplus · Accepted Answer

Irina is willing to pay a maximum of $2.40 for her first glass of cranberry juice. Since the cost of one glass is $0.80, she can purchase three glasses for $2.40.

For each subsequent glass, she is only prepared to pay 20 cents less than the previous one. This means she will pay $2.20 for the fourth glass, $2.00 for the fifth glass, and so on.

To determine how many glasses she will purchase, we can create a table:

| Glass | Price |
|-------|-------|
| 1     | $2.40 |
| 2     | $2.20 |
| 3     | $2.00 |
| 4     | $1.80 |
| 5     | $1.60 |
| 6     | $1.40 |
| 7     | $1.20 |
| 8     | $1.00 |
| 9     | $0.80 |

We can see from the table that Irina will purchase a total of 9 glasses of cranberry juice: 3 for $2.40, 3 for $2.00, and 3 for $0.80. Therefore, the answer is C) 9 glasses.

Suppose That Irina Is Prepared to Pay a Maximum of $2.40