SOLUTION: A container ship left Hawaii and traveled north at an average speed of 5 km/h. A cruise ship left at the same time and traveled in the opposite direction with an average peed of 30

Question 1192380: A container ship left Hawaii and traveled north at an average speed of 5 km/h. A cruise ship left at the same time and traveled in the opposite direction with an average peed of 30 km/h. Find the number of hours the cruise ship needs to travel before the ships are 70 km apart.
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

They are traveling in opposite directions, so the rate at which the distance between them is increasing is 5+30=35 km/h.

The number of hours needed for them to be 70 km apart is 70/35 = 2.

ANSWER: 2 hours

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