Question

44. Melissa helps her grandfather at his store. Each mornin
ther at his store. Each morning before the store opens, she places a
total of $100 into the cash register so that change can be made for purchase
must include the following:
change can be made for purchases. The total amount
• $20 in five-dollar bills and $30 in one-dollar bills
• At least one roll each of quarters, dimes, nickels, and pennies
i ne partially completed chart below shows the dollar value for each kind of money that Melissa
must put into the cash register. Complete the chart to show one way Melissa could make a tota
must put into the
of $100.
Money to be placed in the Cash Register
Kind of Money
Dollar Amount
of Each Kind
of Money
Number of Each
Kind of Money
to be placed in
Cash Register
Total Amount of
Each Kind of
Money
$20.00
$30.00
30
$5 bill
$1 bill
Rolls of Quarters
Rolls of Dimes
Rolls of Nickels
Rolls of Pennies
$5.00
$1.00
$10.00
$5.00
$2.00
$0.50
$100.00

Answer 1

HOW TO: SOLVE AN APPLICATION

Step 1. Identify what you are asked to find and choose a variable to represent it.

Step 2. Write a sentence that gives the information to find it.

Step 3. Translate the sentence into an equation.

Step 4. Solve the equation using good algebra techniques.

Step 5. Check the answer in the problem and make sure it makes sense.

Step 6. Write a complete sentence that answers the question.

Remember that whatever the application, once we write the sentence with the given information (Step 2), we can translate it to a percent equation and then solve it.

Do you pay a tax when you shop in your city or state? In many parts of the United States, sales tax is added to the purchase price of an item. See Figure 6.7. The sales tax is determined by computing a percent of the purchase price.

To find the sales tax multiply the purchase price by the sales tax rate. Remember to convert the sales tax rate from a percent to a decimal number. Once the sales tax is calculated, it is added to the purchase price. The result is the total cost—this is what the customer pays.