# Finding a percentage of a total amount without a calculator: Sales tax, commission, discount Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to **Finding a percentage of a total amount without a calculator: Sales tax, commission, discount**. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using **Show Answer** button. You can use **Next Quiz** button to check new set of questions in the quiz.

**Q 1 - If the sales tax rate is 7.5%, then how much sales tax would you pay for a $40 shirt?**

### Answer : B

### Explanation

**Step 1:**

Rate of sales tax = 7.5%

Cost of shirt = $40

**Step 2:**

Sales tax = 7.5% of $40 = 0.075 × 40 = $3

**Q 2 - At an electronics store, a 42-inch TV sells for $1400 at a 12% discount and sales tax is 6.5%. What is the final cost?**

### Answer : A

### Explanation

**Step 1:**

Marked price of TV = $1400

Discount = 12% of $1400 = 0.12 × 1400 = $168

Price after discount = $ 1400 − $168 = $1232

**Step 2:**

Sales tax = 6.5% of $1232 = $80.08

Final cost = $1232 + $80.08 = $1312.08

**Q 3 - If your meal costs $81, and sales tax is 6.5% and if you tip the waiter 15%, how much would you pay?**

### Answer : D

### Explanation

**Step 1:**

Bill amount = $81

Sales tax = 6.5% of $81 = 0.065× 81 = $5.27

Tip = 15% of $81 = 0.15 × 81 = $12.15

**Step 2:**

Final amount paid = Bill amount + sales tax + tip

= $81 + $5.27 + $12.15

= $98.42

**Q 4 - If your phone bill was $75.80 and if there is a 2.5% discount on prompt payment, how much will you pay if you paid in time?**

### Answer : C

### Explanation

**Step 1:**

Bill amount = $75.80

Discount = 2.5% of $75.80 = $1.90

**Step 2:**

Amount paid after discount = $75.80 − $1.90

= $73.90

**Q 5 - At a store, a $59 dress is marked down 20%. What is the discount? What is the sale price of the dress?**

### Answer : C

### Explanation

**Step 1:**

Marked price of dress = $59

Discount = 20% of $59 = 0.20 × $59 = $11.80

**Step 2:**

Sales price of the dress = $59 − $11.80

= $47.20

**Q 6 - The sales tax on a $1350 computer is $94.50. What is the rate of sales tax?**

### Answer : A

### Explanation

**Step 1:**

Sale price of computer = $1350

Sales Tax = $94.50

**Step 2:**

Rate of sales tax = 94.50/1350 × 100

= 7%

**Q 7 - The price of a car is $28,990. If the sales tax rate is 6%, then how much sales tax is being charged?**

### Answer : D

### Explanation

**Step 1:**

Price of car = $28,990

Rate of sales tax = 6%

**Step 2:**

Sales tax being charged = 6% of $28,990

= 0.06 × 28,990 = $1739.40

**Q 8 - In a store, a $8 bag of candy marked down 40%. What is the discount? What is the sale price of the bag of candy?**

### Answer : B

### Explanation

**Step 1:**

Price of candy = $8

Mark down on candy = 40% of $8 = 0.4 × 8

= $3.20

**Step 2:**

Sale price of bag of candy = $8 − $3.20

= $4.80

**Q 9 - In a store, a shirt that sells for $24 is marked “15% off.” What is the discount? What is the sale price of the shirt?**

### Answer : A

### Explanation

**Step 1:**

Marked price of shirt = $24

Discount on the shirt = 15% of $24 = 0.15 × 2

= $3.60

**Step 2:**

Sale price of shirt = $24.00 − $3.60

= $20.40

**Q 10 - Mike is a salesman who earns a base salary of $360 per week plus 9% commission on sales. What was Mike’s weekly salary if his total sales for the week were $6300?**

### Answer : C

### Explanation

**Step 1:**

Total sales = $6300

Commission on sales = 9% of $6300

= 0.09 ×6300 = $567

**Step 2:**

Base salary = $36

Mike’s weekly salary = base salary + commission

= $360 + $567 = $927