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:0.2p
Expression B: 0.8p
Expression C:10.2p
Expression D:p0.2p
Expression E:p0.8p
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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