can someone please help me, Rob is going to college in Oklahoma which is 680 miles from their his home in Tennessee. He can travel on state highways at 55mph or on the interstate at 70mph. Approximately, how much longer will his trip be if he takes state highways?
A. 5 hrs 3 min
B. 4 hrs 13 min
C. 3 hrs 5 min
D. 2 hrs 39 min
Have you considered using the equation
time=distanc/speed
figure the time for each, and subtract.
Yes. 3 hours, 5 minutes is correct.
To calculate the approximate time difference between taking state highways and the interstate, we first need to determine the time it would take to travel each route.
To find the time taken when using state highways, we divide the distance (680 miles) by the speed (55 mph):
Time = Distance / Speed
Time = 680 miles / 55 mph
The result is approximately 12.36 hours.
Next, we find the time taken when using the interstate highways by dividing the distance (680 miles) by the speed (70 mph):
Time = 680 miles / 70 mph
The result is approximately 9.71 hours.
Finally, we calculate the time difference between the two routes by subtracting the time on the interstate from the time on state highways:
Time Difference = Time (state highways) - Time (interstate)
Time Difference = 12.36 hours - 9.71 hours
The result is approximately 2.65 hours or 2 hours and 39 minutes.
So, the answer is D. 2 hrs 39 min.