Question

The grocery store has 20% off from the original price on cereal. The equation for finding the sale price would be y = x - (.20x). What is the sale price if the cereal cost $3.00?

$2.20


$2.50


$2.40


$2.30

Answer 1

$2.40

Explanation:

y = x - 20% of x

where x is $3.00

20% would be 1/5 of 3.00 = 3/5

3 - 3/5 = 15-3/5 = 12/5 = $2.40

Answer 2

Explanation:

y = x - 0.2x

y = 0.8x

When x = $3.00, y = (0.8)($3.00) = $2.40.

The sale price is $2.40.