A car 250 miles due east of point A is traveling west at a constant rate of 60 miles per hour whiles another car 314 miles due west of point A is traveling east at a constant rate of 55 miles per hour. After about how many hours will the 2 cars meet?

3.1

4.9

5.4

7.6

9.7

Question

A car 250 miles due east of point A is traveling west at a constant rate of 60 miles per hour whiles another car 314 miles due west of point A is traveling east at a constant rate of 55 miles per hour. After about how many hours will the 2 cars meet?

3.1

4.9

5.4

7.6

9.7

anonymous · Answer

x:distance
we have    v=dx/dt
so   x=60t-250 and x=-55t+314
t=4.9