Question 295564
Two cars leave the airport at the same time and travel in opposite directions. If one car travels at 35 mph and the other at 25 mph,how long will it take for them to be 300 miles apart?

let car A have a rate of 35mph

et car b have a rate of 25 mph

let them be 300 miles apart after time t

car A travels 35t miles and car be travels 25t 

35t+25t=300

60t=300

t=300/60

t=5

They are 300 miles apart after 5 hours.