Safi is traveling to London, England. he's going to have two layovers on his trip. in total, he's going to spend 17 hours on a plane. if he doesn't want to spend any more than 21 hours in total traveling, how long can each layover be, assuming they're the same length?
To determine the possible length of each layover, we need to subtract the total flight time from the maximum allowable travel time.
Safi is spending a total of 17 hours on a plane. If he doesn't want to spend more than 21 hours in total traveling, we subtract the total flight time from the maximum travel time:
21 hours - 17 hours = 4 hours
Therefore, the possible length of each layover is 4 hours.