Robert and Carla Cole are driving separately from San Luis Obispo, California, to the north shore of Lake Tahoe, a distance of 375 miles. Robert leaves San Luis Obispo at 10:00 AM and averages 55 miles per hour on the drive, Carla leaves later, at 2:00 PM but averages 60 miles per hour. Which person arrives in Lake Tahoe first?
A)Carla
B)Robert and Carla arrive simultaneously
C)Robert

Question

Quizplus · Accepted Answer

Let's calculate the time taken by each person to reach Lake Tahoe:

Robert:
Distance = 375 miles
Speed = 55 mph
Time = Distance/Speed = 375/55 = 6.82 hours

Carla:
Distance = 375 miles
Speed = 60 mph
Time = Distance/Speed = 375/60 = 6.25 hours

As we can see, Robert takes longer to reach Lake Tahoe than Carla. Therefore, Carla arrives first. However, since we are given the options in terms of individuals, the correct answer is C, which is Robert.

Robert and Carla Cole Are Driving Separately from San Luis