Highway speed limit increased from 55 mi/h to 65 mi/h, how much time is saved on a 435 mile trip if you travel at the new speed limit?

Time for first speed

T1=435/55=7.909hrs
T2=435/65=6.96hrs
Time saved=
7.909-6.969=1.21
Therefore the time saved
is 1 hr 21 mins

To calculate the time saved on a 435 mile trip when the speed limit is increased from 55 mi/h to 65 mi/h, we need to compare the time it takes to travel the distance at each speed.

Step 1: Determine the time taken to travel 435 miles at the old speed limit of 55 mi/h.

Time = Distance / Speed
Time = 435 miles / 55 mi/h

Step 2: Determine the time taken to travel 435 miles at the new speed limit of 65 mi/h.

Time = Distance / Speed
Time = 435 miles / 65 mi/h

Step 3: Calculate the time difference.

Time Saved = Time Taken at Old Speed - Time Taken at New Speed
Time Saved = (435 miles / 55 mi/h) - (435 miles / 65 mi/h)

Now let's calculate the time saved:

Step 1: Calculate the time taken at the old speed limit of 55 mi/h.

Time = 435 miles / 55 mi/h
Time = 7.909 hours (rounded to three decimal places)

Step 2: Calculate the time taken at the new speed limit of 65 mi/h.

Time = 435 miles / 65 mi/h
Time = 6.692 hours (rounded to three decimal places)

Step 3: Calculate the time saved.

Time Saved = 7.909 hours - 6.692 hours
Time Saved = 1.217 hours (rounded to three decimal places)

Therefore, traveling at the new speed limit of 65 mi/h saves approximately 1.217 hours on a 435 mile trip.