# Math

A boat can go 20 miles against a current in the same times that it can go 60 miles with the current. The current is 4 miles per hour. Find the speed of the boat with no current.

1. 👍 0
2. 👎 0
3. 👁 131
1. since time = distance/speed,

20/(x-4) = 60/(x+4)
x=6

1. 👍 0
2. 👎 0
posted by Steve

## Similar Questions

1. ### Algebra

A boat can go 20 miles against a current in the same times that it can go 60 miles with the current. The current is 4 miles per hour. Find the speed of the boat with no current.

asked by May on January 15, 2014
2. ### Algebra

A boat can go 20 miles against a current in the same times that it can go 60 miles with the current. The current is 4 miles per hour. Find the speed of the boat with no current.

asked by John on January 14, 2014
3. ### Math

in still water, a speed boat travels 5 times faster than the current of the river. If the speed boat can travel 48 miles upstream and then back in 5 hours, find the rate of the current.

asked by Amy on January 6, 2016
4. ### Math

in still water, a speed boat travels 5 times faster than the current of the river. If the speed boat can travel 48 miles upstream and then back in 5 hours, find the rate of the current.

asked by Amy on March 7, 2016
5. ### Intermediate Algebra

in still water, a paddle boat averages 10 miles per hour. It takes the boat the same amount of time to travel 36 mile downstream, with the current as 24 miles upstream, against the current. What is the rate of the water's current?

asked by Anonymous on December 9, 2012
6. ### alegra.

A boat cruises 36 miles against a 3 mph current and 36 miles back in the direction of the same current. The round trip takes 5 hours. What is the speed of the boat in the still water? use d=rt

asked by Anonymous on October 21, 2010
7. ### Algebra 2

The excursion boat on the river takes 2½ hours to make the trip to a point 12 miles upstream and to return. If the rate at which the boat travels in still water is 5 times the rate of the river current, what is the rate of the

asked by Casey on October 13, 2012
8. ### algebra

A boat can travel 38 mph in still water. If the boat can travel 100 miles with the current in the same time it can travel 80 miles against the current, find the rate of the current r in miles per hour.

asked by sasha on September 13, 2016
9. ### math

River Current A boat can travel 36 miles upstream in the same time that it can travel 54 miles downstream. If the speed of the current is 3 miles per hour, find the speed of the boat without a current.

10. ### algebra

A boat can travel 114 miles upstream in the same time that it can travel 186 miles downstream. If the speed of the current is 6 miles per hour, find the speed of the boat without a current.

asked by carl on August 17, 2011

More Similar Questions