Question

Brooke purchased a new pair of tennis shoes that cost x dollars. Her brother, Benji, purchased a new pair of shoes that cost 20% more than Brooke's. Which expression should be used to represent the cost of Benji's shoes?
Group of answer choices

x + 0.2x

1.2x

Both A and B.

Neither A nor B.

Answer 1

Answer(s):

• x + 0.2x
• 1.2x

Solution:

We know that:

• Brookie = x dollars
• Benji = x + (20% × x)

Solution:

To see which expression has been used, we will need to simplify the expression.

• Benji = x + (20% × x)
• => Benji = x + (20/100 × x)
• => Benji = x + (2/10 × x)
• => Benji = x + (0.2 × x)
• => Benji = x + (0.2x)
• => Benji = x + 0.2x
• => Benji = 1.2x

Looking at the options, Option A and Option B matches with our result.

Option A and B are correct.