Question

Jake drives Go-Karts at an average speed of 2.75 laps per minute. If the relationship between the number of laps completed and numberof minutes varies directly, how long would it take him to complete 41.25 laps?O A. 0.07 minutesOB. 15 minutesO C. 38.5 minutesO D. 113 minutes

Answer 1

Since the number of minutes and number of laps completed varies directly, therefore if 2.75 laps correspond to 1 min then:

`\frac{2.75\text{laps}}{1\min}=\frac{41.25\text{laps}}{x\min }\text{.}`

Solving for x we get:

`x\min =(41.25)/(2.75)1\min =15\min \text{.}`

Answer: Option B.