Q: What is the speed of a boat that travels 10 miles in 30 minutes?

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Let boat speed = X and current speed = Y Downstream speed = boat speed plus current speed = X + Y Upstream speed = boat speed minus current speed = X -Y Downstream speed = 2 miles divided by 3 minutes = 2/3 miles per minute Upstream speed = 2 miles divided by 15 minutes = 2/15 miles per minute X + Y = 2/3 X - Y = 2/15 add equations 2X = 2/3 + 2/15 = 10/15 + 2/15 = 12/15 = 4/5 divide by 2 X = 4/10 = 2/5 use second equation and find Y as X -Y = 2/15 2/5 - Y = 2/15 6/15 - Y = 2/15 Y = 4/15 = current speed = 0.266 miles per minute

If the miles are nautical ones, then it takes (3)/(the boat's speed in knots) hours. If the miles are statute ones, then it takes (2.6053)/(the boat's speed in knots) hours.

30 km/h

Time = Distance/Average speed = 115/100 = 1.15 hours or 1 hour and 9 minutes.

Boat WRT land, downstream 10 + 8 = 18 KMH Boat WRT land, upstream 10 - 8 = 2 KMH Boat WRT water 10 KMH

Related questions

It would be 20 MPH.

The speed of the boat is 26.67 miles per hour. This is calculated by dividing the distance traveled (20 miles) by the time taken (45 minutes converted to hours, which is 0.75 hours).

The average speed is(4 x the number of nautical miles the boat traveled in that time) knots.

5580+1/3

Time = Distance/Speed = 10 miles/20 miles per hour = 0.5 hours or 30 minutes.

25 miles.

5 miles

11 mph

hm

25 miles

The rate of crossing depends on the speed the boat is traveling, not on the distance it has to travel. 25 miles could probably be crossed in approximately forty-five minutes or less.

Let boat speed = X and current speed = Y Downstream speed = boat speed plus current speed = X + Y Upstream speed = boat speed minus current speed = X -Y Downstream speed = 2 miles divided by 3 minutes = 2/3 miles per minute Upstream speed = 2 miles divided by 15 minutes = 2/15 miles per minute X + Y = 2/3 X - Y = 2/15 add equations 2X = 2/3 + 2/15 = 10/15 + 2/15 = 12/15 = 4/5 divide by 2 X = 4/10 = 2/5 use second equation and find Y as X -Y = 2/15 2/5 - Y = 2/15 6/15 - Y = 2/15 Y = 4/15 = current speed = 0.266 miles per minute