Nick and Carla Cole are driving separately from San Luis Obispo, California, to the north shore of Lake Tahoe, a distance of 375 miles. Nick leaves San Luis Obispo at 11:00 AM and averages 55 miles per hour on the drive, Carla leaves later, at 4:00 PM but averages 60 miles per hour. Which person arrives in Lake Tahoe first?
A) Nick
B) Carla
C) Nick and Carla arrive simultaneously

Question

Quizplus · Accepted Answer

We can use the formula:
time = distance / speed
For Nick: 
time = 375 miles / 55 mph = 6.82 hours
For Carla: 
time = 375 miles / 60 mph = 6.25 hours
Nick's departure time is 11:00 AM and Carla's departure time is 4:00 PM, so there is a time difference of 5 hours.
Therefore, Carla's arrival time will be 6.25 hours + 5 hours = 11:15 PM
Nick's arrival time will be 11:00 AM + 6.82 hours = 5:49 PM
Since 5:49 PM is earlier than 11:15 PM, Nick arrives at Lake Tahoe first.

Nick and Carla Cole Are Driving Separately from San Luis