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Chapter 1: Q2. (page 44)

Determine whether you need an estimate or an exact answer. Then use the four-step problem-solving plan to solve.

SHOPPING The regular price of a T-shirt is \(9.99. It is on sale for 15% off. Sales tax is 6% If you give the cashier a \)10 bill, how much change will you receive?

Short Answer

Expert verified

Amount of change is $0.1

Step by step solution

01

Step 1. Calculate the T-shirt price when an offer is applied.

P'=T-shirtregularprice鈭�15%offonpriceP'=9.99鈭�9.99脳15100P'=9.99鈭�1.4985P'=8.4015

02

Step 2. Calculate the T-shirt price when sales tax is applied.

The actual price of the T-shirt.

P=P'+P'脳6100P=8.4015+8.4015'脳6100P=8.9

03

Step 3. The formula for change amount.

Change=Amountgiventothecashier鈭�ActualpriceofT-shirt

04

Step 4. Evaluate the change amount.

change=10鈭�8.9change=0.1

Therefore, amount received back is $0.1

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