Kevin gives roping lessons at the Sundown Corral. A 4-hour lesson costs $100.00. The cost of a lesson is proportional to the duration, in hours, of the lesson. What is the constant of proportionality in terms of dollars per hour?

Question

Kevin gives roping lessons at the Sundown Corral. A 4-hour lesson costs $100.00. The cost of a lesson is proportional to the duration, in hours, of the lesson. What is the constant of proportionality in terms of dollars per hour?

A.
35
B.
25
C.
20
D.
30

Answer 1

B. 25

Explanation: To find the constant of proportionality, divide the total cost by the duration of the lesson.

Constant of proportionality = Total cost / Duration of lesson
Constant of proportionality = $100 / 4 hours
Constant of proportionality = $25/hour

Therefore, the constant of proportionality in terms of dollars per hour is $25.