Question

Choose an amount between $60.00 and $70.00 to represent the cost of a grocery bill for a family. Be sure to include dollars and cents.

Part A: If the family has a 25% off coupon, calculate the new price of the bill. Show all work or explain your steps. (6 points)

Part B: Calculate a 7% tax using the new price. What is the final cost of the bill? Show all work or explain your steps. (6 points)

Answer 1

A: $51.00

B: $54.57

Explanation:

Let amount = $68.00

Part A:

Since the coupon is for 25%, the family pays 75% of $68.00

75% of $68.00 = 0.75 × $68.00 = $51.00

The new price is $51.00

Part B:

The tax is 7% of $51.00

7% of $51.00 = $3.57

The total price is the sum of $51.00 and the amount of tax, $3.57

Total price = $51.00 + $3.57 = $54.57