Express the following as a single discount rate.30.  what is the selling price of an article that lists at $1,500 subject to discounts of 40%, 25%, and 10%? (you may use the method described in “check your selling price.”)31.  what is the discount on $640 if the discount rates are 25%, 10%, and 5%?

Step-by-step explanation:

Part A. What is the selling price of an article that lists at $1,500 subject to discounts of 40%, 25% and 10%.

As we know that 40% is equivalent to

The formula of percentage = Original price × discount in percentage/100

So   × 1,500 =

= 0.40 × 1,500 = $600

So the selling price after 40% discount will be 1,500 - 600 = $900

25% of $1,500 = × 1,500

= 0.25 × 1,500 = $375

So the selling price after 25% discount will be = 1,500 - 375 = $1,125

10% discount of $1,500

= × 1,500

= 0.10 × 1,500 = $150

The selling price after 10% discount is 1500 - 150 = $1,350

Part B. What is the discount on $640 if the discount rates are 25%, 10% and 5%.

25% of 640

× 640

= 0.25 × 640 = $160

Discount of 25% on $640 is $160.

Discount of 10% on 640

× 640

= 0.10 × 640 = $64

Discount of 10% on $640 is $64.

5% discount on $640

× 640

= 0.05 × 640 = $32

Discount of 5% on $640 is $32.

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