The original price of a DVD is represented by the variable x. If the DVD is discounted 45%, write a subtraction expression and a multiplication expression to represent its sale price?

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The original price of a DVD is represented by the variable x. If the DVD is discounted 45%, write a subtraction expression and a multiplication expression to represent its sale price?

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Answer 1 · 2016-11-20T13:16:26

Let's call the sale price $s$ $s$

Explanation:

Subtraction :
Then the discount is $45 %$ $45%$ of $x$ $x$
$s=x-45/100x=x-(cancel5xx9)/(cancel5xx20)x=x-9/20x$
The answer could also have been expressed as
$s=x-0.45x$

Multiplication :
Then $s$ is $100%-45%=55%$ of $x$ or:
$s=55/100x=(cancel5xx11)/(cancel5xx20)x=11/20x$
Or:
$s=0.55x$

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The original price of a DVD is represented by the variable x. If the DVD is discounted 45%, write a subtraction expression and a multiplication expression to represent its sale price?

1 Answer

Explanation:

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