Question

Today, everything at a store is on sale. The store offers a 20% discount. The regular price of a T-shirt is $18. What is the discount price?

A
$3.80

B
$14.40

C
$17.20

D
$21.60

Answer 1

B. $14.40

Explanation:

The discount price of 20% means that 20% of the tag price will be removed for the final purchase. If the tag price is $18, then 20% of that will be taken off at the register.

Determine the amount to be taken off:

(20%)*($18)

(0.20)*($18) = $3.60

Subtract that from the tag price:

$18 - $3.60 = $14.40

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This can also be calcualted by noting that "20% off" could also be expressed as (1 - 0.20) [where the 1 represents full price and the 0.20 the 20% off):

$18*(1 - 0.20) = &18*(0.80) = $14.40