Math word problem

Question

dump truck 1 and dump truck 2 are headed straight toward each other truck 1 is traveling at 55 mph and truck 2 is traveling at 58 mph if the two are 339 miles apart how many hours will it be before they meet

Answer 1

Both trucks travel the same amount of time (left at the same time). Let that time be represented by the variable t. Since distance equals rate times time, an expression for the distance travelled by truck 1 is 55t. Similarly an expression for the distance travelled by truck 2 is 68t. The sum of those distances must be 339.

The equation that models the problem:

55t + 58t = 339.

Solve for t.