Problem

14 The regular price of an item at a store is \( p \) dollars. The item is on sale for \( 20 \% \) off the regular price. Some the expsions shown below represent the sale price, in dollars, of the item.
Expression \( A: 0.2 p \)
Expression B: \( 0.8 p \)
Expression \( C: 1-0.2 p \)
Expression \( D: p-0.2 p \)
Expression \( E: p-0.8 p \)
Which two expressions each represent the sale price of the item?
A Expression \( A \) and Expression \( E \)
B Expression B and Expression \( C \)
C Expression B and Expression D
D Expression C and Expression D

Answer

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Answer

= 0.8 p

Steps

Step 1 :\text{Sale price} = p - (0.2 \times p)

Step 2 := p(1 - 0.2)

Step 3 := 0.8 p

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