contestada

It takes 2 hours for a boat to travel 28 miles downstream.The same boat can travel 18 miles upstream in 3 hours .Find the rate of the stream’s current.

Respuesta :

JoieK

Answer:

4 miles per hour.

Step-by-step explanation:

2 hours = 28 miles downstream; 14 miles per hour

3 hours = 18 miles upstream; 6 miles per hour

The boat went faster when going downstream meaning the current is going towards up stream. I would find the average speed,  (14+6=20/2=10 m/h average) and determine subtract the average from the speed from wither upstream or downstream. 14- 10= 4 and 10- 6= 4. Therefore the stream's current is 4 miles per hour.