Richard is driving home to visit his parents. 125 of the trip are on the interstate highway where the speed limit is 65 . Normally Richard drives at the speed limit, but today he is running late and decides to take his chances by driving at 72 .

how do i get to my answer

What is your question?

So Richard is traveling 125 miles and covers this distance in 65mph. This is Richards intial time 1.92 hour (125m/65mph). The final time which is him covering the same distance in 72mph is 1.74 h (125m/72mph). To determine how much time he saves just take the difference of the two. So 1.92-1.74 =0.18 hour. Now to determine what this is in minutes just multiply 0.18 by 60 and your answer will be 10.8 minutes. This is the time he saves by driving 72mph instead of 65.

To calculate the answer, we need to determine the time it would take Richard to drive both the 125 miles on the interstate at 65 mph and the remaining distance at 72 mph.

First, we calculate the time it takes to drive 125 miles at 65 mph. We can use the formula:

Time = Distance / Speed

So, the time for the 125 miles on the interstate would be:

Time1 = 125 miles / 65 mph

Next, we need to calculate the remaining distance Richard needs to travel. Assuming the total distance is D miles, the remaining distance would be:

Remaining Distance = Total Distance - Distance on Interstate

In this case, we don't have the total distance, so we can't calculate the exact remaining distance. But assuming Richard's parents live some distance away from the interstate, we can estimate that the remaining distance would be around 100 miles.

Now, we can calculate the time it would take to cover the estimated 100 miles at 72 mph:

Time2 = 100 miles / 72 mph

To get the answer, we need to add the time for both sections of the trip:

Total Time = Time1 + Time2

Please note that these calculations are approximate since we don't have the exact total distance and remaining distance values. To get a precise answer, we would need the specific distance figures.