SALES TAX DISCOUNT AND TIP WORKSHEET

Problem 1 : 

Find a 12% tip on a check for $40.  

Problem 2 : 

Estimate the tax on shoes that cost $68.50 when the sales tax rate is 8.25%.

Problem 3 : 

The dinner check for Mr. David’s family is $70. If a tip of 15% is paid, How much total money should Mr. David pay ?  

Problem 4 : 

If the sales tax rate is 6%, find price of the shirt after sales tax on a shirt that costs $30.

Problem 5 : 

In a department store, a $50 dress is marked, "Save 25%." What is the discount? What is the sale price of the dress?

Problem 6 : 

Mr. Michael wants to buy a $20 jar of candy labeled, "30% off". If the sales tax rate is 6%, how much should Mr. Michael pay for the jar of candy?

Problem 7 : 

At Best Buy they have a stereo system that sells for $2200 and is on 15% discount sale and sales tax is 7%.  What is the final cost?

Problem 8 : 

If you go out to eat with 3 friends and your meal was $80, there is 5% sales tax and you should tip the waiter 10%.  How much should each person pay?

Detailed Answer Key

1. Answer : 

=  12% of 40

Convert the percent to decimal. 

=  0.12 ⋅ 40

Multiply 0.15 and 70.

=  4.8

2. Answer : 

First round $68.50 to $70 and 8.5% to 8%.

8% of 70  =  (8%)(70)

Convert the percent to decimal. 

=  0.08 ⋅ 70

=  5.60

The sales tax is about $6.

3. Answer : 

Total amount of money :

=  Bill for Food + Tip

=  70 + 15% of 70

Convert the percent to decimal. 

=  70 + 0.15 ⋅ 70

Multiply 0.15 and 70.

=  70 + 10.5

=  80.5

Mr. David should pay $80.50.

4. Answer : 

Price after sales tax :

=  Original price + Sales tax

=  30 + 6% of 30

Convert the percent to decimal. 

=  30 + 0.06 ⋅ 30

Multiply 0.06 and 30.

=  30 + 1.8

=  31.8

The price after the sales tax is $31.80.

5. Answer : 

Discount : 

=  25% of 50

=  (25%)(50)

Convert the percent to a decimal. 

=  0.25 ⋅ 50

Multiply 0.25 and 50.

=  12.50

The discount is $12.50.

Sale price of the dress can be found by subtracting the discount from the marked price. 

Price after after discount :

=  Marked price - Discount

=  50 - 12.5

=  37.50

The sale price of the dress is $37.50.

6. Answer : 

Discount :

=  30% of 20

=  (30%)(20)

Convert the percent to a decimal. 

=  0.3 ⋅ 20

Multiply 0.3 and 20.

=  6

The discount is $6.

Price after after discount :

=  Marked price - Discount

=  20 - 6

=  14

The sale price is $14.

Price after after sales tax :

=  Sale price + Sales tax

=  14 + 6% of 14

=  14 + 0.06 ⋅ 14

=  14 + 0.84

=  14.84

Mr. Michael should pay $14.84.

7. Answer : 

Discount :

=  15% of 2200

=  (15%)(2200)

Convert the percent to a decimal. 

=  0.15 ⋅ 2200

Multiply 0.15 and 2200.

=  330

Cost after after discount :

=  Marked price - Discount

=  2200 - 330

=  1870

Cost after after sales tax :

=  Sale price + Sales tax

=  1870 + 7% of 1870

=  1870 + 0.07 ⋅ 1870

=  1870 + 130.9

=  2000.90

The final cost is $2000.90.

8. Answer : 

Cost of meal after sales tax :

=  Cost of meal + Sales tax

=  80 + 5% of 80

=  80 + 0.05 ⋅ 80

=  80 + 4

=  84

Cost of meal after tip :

=  Cost of meal after sales tax + Tip

=  84 + 10% of 84

=  84 + 8.4

=  92.4

Total cost of meal for 4 people is $92.40.

(4 people = you + 3 friends)

Cost per person : 

=  92.40/3

=  30.80

So, each person should pay $30.80.

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