Problema Solution
Marc was told his dinner would be ready at 18:00. He left his house at 12:00 and traveled in his car at an average speed of 45 mph to his mom's house 300 miles away. Did Marc make it home in time for dinner?
Answer provided by our tutors
First, we note that we will use the general equation D=RT where:
D=300miles
R=45mph
We plug these numbers in and solve for T, the time it takes Marc to get to his mom's house where he is having dinner:
300=45T
T= 6 hours 40min
When we add this time to 12:00, when he left, we find out that he arrives at 18:40. Therefore, he does NOT make it home in time for dinner.