You normally drive on the freeway between san diego and los angeles at an average speed of 105 km/h (65mi/h), and the trip takes 2 hr and 20 min. on a friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 70 km/h (50 mi/h). how much longer does the trip take?

Given the second case mentioned, the trip will take:

Explanation:

To calculate how much longer someone will take on that journey, you must calculate the distance traveled, using the aforementioned initial speed, however, the time must be converted into a number that you can calculate, this is done using a rule of three:

Now it is calculated:

Now you just need to divide the total distance by the new speed to find the total time spent now:

Since the time of the first case was 2 hours 20 minutes, the difference is 1 hour 10 minutes.

more than, less

less than, more