If truck 'A' is going 30 mph and truck 'B' is going 15 mph with a 20 second lead for a distance if 1/4 mile, which truck finishes first?

Question

Word problem Algebra II

Answer 1

Christine,

 

Time taken by truck A to finish is 0.25/30 hrs (speed = distance/time)

which is (0.25/30)*60*60 = 30 seconds.

 

Time taken by truck B = (0.25/15)*60*60 = 60 seconds. Truck B has 20 second lead so time taken is 40 seconds.

 

Truck A finishes first.