SOLUTION: Please answer this for me! How many minutes will it take a helicopter, flying at 120km/h to reach a naval vessel that is 45 km away, if the vessel is heading toward the helicopter

Question 870423: Please answer this for me!
How many minutes will it take a helicopter, flying at 120km/h to reach a naval vessel that is 45 km away, if the vessel is heading toward the helicopter at 30km/h?
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
We need to know how long in minutes does it take the helicopter and naval vessel to cover the 45 km. We use rate times time equals distance. Therefore,
120t + 30t = 45
150t = 45
t = 45/150 = 3/10
now we want 3/10 of 60 minutes = 18 minutes
It will take 18 minutes for the helicopter to reach the naval vessel

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