Two vans leave town at the same time going in opposite directions. one travels at 60 miles/hr. the second travels 30 miles/hr. in how many hours will they be 180 miles apart?
let the time be t hrs
60t + 30t = 180
90t=180
t = 2
To find out how many hours it will take for the two vans to be 180 miles apart, you can use the concept of relative speed.
The two vans are moving in opposite directions, which means that they are moving away from each other. In this scenario, you can find the relative speed by adding their individual speeds.
So, the relative speed of the two vans is 60 miles/hr + 30 miles/hr = 90 miles/hr.
To find the time it will take to be 180 miles apart, divide the distance by the relative speed:
Time = Distance / Speed
Time = 180 miles / 90 miles/hr
Time = 2 hours
Therefore, it will take 2 hours for the two vans to be 180 miles apart.