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Plz help! (I will give brainliest)
It took a boat 4 hours to travel downstream 120 miles. Upstream, the same trip took 6 hours. Find the rate of the current and the speed of the boat in still water.

Respuesta :

mhanifa

Answer:

  • 25 mph, 5 mph

Step-by-step explanation:

  • Speed of the boat = x
  • Speed of the current = y

Travel downstream, speed is:

  • x + y = 120/4 = 30

Travel upstream, speed is:

  • x - y = 120/6 = 20

Add up the equations:

  • x + y + x - y = 30 + 20
  • 2x = 50
  • x = 25

Find y:

  • y = 25 - 20 = 5

Speed of the boat is 25 mph

Speed of the current is 5 mph

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