Two Cars are Driving Toward Each Other
Algebra
Level
2
Two cars are driving toward each other with the speeds 50 mph and 70 mph respectively. If the distance between them is 360 miles, after how many hours will they meet?
The answer is 3.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
We know that the distance between the cars is 360 miles, and that they are going with the speeds of 50mph and 70mph. To make this easier, we can think of this problem as one car going with the combined speeds of the 2 cars.
So: 50+70=120mph (Combined speed of the cars)
Now that we have this number, we can go ahead and use the Distance Rate Time formula.
In this case, we are using Time = Distance / Rate (Because we know the rate and distance). Substituting the Distance and Time for our numbers, we get that:
rate = 360/120 or 3 hours