SOLUTION: Given: d = rt, where "d" is distance, "r" is rate, and "t" is time. One car leaves point A and travels due north at 50 mi/hr. Another car leaves point A 3 hours later and

Question 874284: Given: d = rt, where "d" is distance, "r" is rate, and "t" is time.
One car leaves point A and travels due north at 50 mi/hr. Another
car leaves point A 3 hours later and travels due south at 70 mi/hr. When
will the two cars be 1,000 miles apart?

Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Two cars going in opposite directions but leave at different times, three hour difference.
_______________speed_________time_________distance
NORTH__________50_____________t___________
SOUTH__________70____________t-3__________

I am making all numbers into variables, because you asked a very similar question in a very recent help request post, and you may find the solution process very much alike in both questions.

When are the two cars a difference of m miles from eachother?
Southbound car left k hours after the north bound car.
_______________speed_________time_________distance
NORTH__________n_____________t_____________nt
SOUTH__________s____________t-k____________s(t-k)
Distance Apart_____________________________m

Unknown variables are t. Given variables with values assumed to be n, s, k, and m.

Solution Continuation:

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