Question

McKenna pays $16 per month for a gym membership. In addition, she pays $2 per Pilates class.

Answer 1

No, it is not the correct amount to be charged.

Step-by-step explanation:

• Step 1: Given, the monthly gym membership = $16 and charges for Pilates class = $12. So charges for 12 classes = 2 × 12 = $24
• Step 2: Calculate total charges for one month.

Total charges = Gym membership + Pilates classes = 16 + 24 = $40

⇒ So the $52 is an incorrect amount.

Answer 2

$16 per month can be changed to 16m where m represents months.

The $2 per Pilates class can be 2p where p represents Pilates classes.

An equation of y = 16m + 2p can be set up, where y represents how much McKenna is charged total for gym membership ($52)

52 = 16m + 2p

We know that McKenna attended 12 Pilates classes, and we also know that McKenna attended 1 month, so we plug this in:

52 = 16(1) + 2(12) (simplify)

52 = 16 + 24 (add 24)

52 = 40

Since this is not equal, $52 is not the correct amount to be charged.