SOLUTION: a boat can travel 20 km per hour. the current in the river flows at 5 km per hour. so downstream the boat travels 25km per hour and upstream 15km per hour . the boat has fuel to la
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Question 938121: a boat can travel 20 km per hour. the current in the river flows at 5 km per hour. so downstream the boat travels 25km per hour and upstream 15km per hour . the boat has fuel to last for 3 hours . the boat leaves its base and travels downstream. at what time the boat must turn around to get back to base without running out of fuel??
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
|Multiplying thru by 75 so as all denominators = 1
3d + 5D = 225
8D = 225
D = 28.125k
= 1.125hr boat must turn around
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