Sales tax, commission, discount

Introduction

In this lesson, we solve problems on finding a percentage of a total amount without a calculator involving sales tax, commission and discount.

Consider the following solved examples.

Example 1

Thesalestaxona$1050computersystemis$63.Whatisthesalestaxrate?

Solution

Step 1:

Price of the computer = $1050

Sales tax = $63

Step 2:

Rate of Sales tax = ⟮$63$1050⟯×100

= 6%

Example 2

At a store, a $60 dress is sold at a discount of $12? What is the percentage of discount and sale price of the dress?

Solution

Step 1:

Discount = $12

Marked price of dress = $60

Step 2:

Percentage of discount = ⟮$12$60⟯×100=20%

Sales price of the dress = $60 $12

= $48

Example 3

Mike is a salesman who earns a base salary of $360 per week plus $567 as commission on sales. What was Mikes percentage of commission and weekly salary if his total sales for the week were $6300?

Solution

Step 1:

Total sales for the week = $6300

Commission on sales = $567

Step 2:

Percentage of commission = ⟮$567$6300⟯×100=9%

Base salary = $360

= $360 + $567 = $927