Algebra 2 word problem? multiple choice!
Two runners leave from the same location traveling in opposite directions. The first runner is running at 7 mph and the second is running at 9 mph. How long have they been running when they are 24 miles apart?

1 hour

1.5 hours

2 hours

2.5 hours

Question

Algebra 2 word problem? multiple choice!
Two runners leave from the same location traveling in opposite directions. The first runner is running at 7 mph and the second is running at 9 mph. How long have they been running when they are 24 miles apart? 

 1 hour 

 1.5 hours 

 2 hours 

 2.5 hours

anonymous · Answer

this is for a quiz..?

anonymous · Answer

relative speed = 16mph , relative distance=24 mils 
get time now using dist = speed X time

ganpat · Answer

speed = distance /time..

relative speed = (9 + 7) = 16 miles/hr..

So 16 = 24/t

t = 24/16 = 1.5 hrs...

hartnn · Answer

take half hour window...in half hour they will be (7+9)/2=8 miles apart,then in next half hour,they will be other 8 miles apart...so on.,they will be 24 miles away in 3 half hours.....