Question

11. The rates for the following math tutoring services are listed below.

Tutoring Service Cost
Time
А
$50
45 minutes
B
$65
1 hour
C
$99
90 minutes
D
$90
2 hours
Which Tutoring Service charges the most per hour?

Answer 1

A

Explanation:

Divide each amount by the number of minutes to find the rate per minute. Then multiply by 60 to find the hourly rate. Then compare the hourly rates.

A

$50 / 45 min * 60 = $66.66/hour

B

$65 / 1 hour = $65/hour

C

$99 / 90 min * 60 = $66/hour

D

$90 / 2 hours = $45/hour

Answer: A

Answer 2

Answer: A

Explanation:

A) 50/ 45 = 1.111....

B) 65/60 = 1.08333...

C) 99/90 = 1.1

D) 90/120 = .75