Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back
the two miles. It took her one hour to row back upstream.
a. At what rate of speed did Lisa row downstream?
b. At what rate of speed did Lisa row upstream?
c.
Suppose Lisa’s speed rowing upstream was 4 miles per hour. How long would it have
taken her to travel two miles?

1. 20min = 1/3 hr, so
2mi/(1/3 hr) = 6mi/hr downstream
2mi/1hr = 2mi/hr upstream

2mi/(4mi/hr) = 1/2 hr

It's not clear whether somewhere in all that you are to find Lisa's speed in still water, and the stream's speed...

posted by Steve

## Similar Questions

1. ### Math

Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At
2. ### Math

Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At
3. ### Math

Lisa rowed her boat for two miles downstream. The trip took her 20 minutes. She then turned around and rowed back the two miles. It took her one hour to row back upstream. a. At what rate of speed did Lisa row downstream? b. At
4. ### algebra

HOW DO SOLVE A BOAT TRAVELED 336 MILES DOWNSTREAM AND BACK. THE TRIP DOWNSTREAM TOOK 12 HOURS. THE TRIP BACK TOOK 14 HOURS. WHAT IS THE SPEED OF THE BOAT IN STILL WATER? WHAT IS THE SPEE OF THE CURRENT
5. ### math

A boat traveling downstream a distance of 39 miles then came right back.If the speed of the current was 12 mph and the total trip took 4 hours 20 minutes,find the average speed of the boat relative to the water.
6. ### math

A person rowed her boat upstream a distance of 45 mi and then rowed back to the starting point. The total time of the trip was 14 hours. If the rate of the current was 2 ​mph, find the average speed of the boat in still
7. ### Algebra

A boat traveled 180 miles downstream and back. The trip downstream took 10 hours. The trip back took 30 hours. Find the speed of the boat in still water and the speed of the current. Solve each system using any method
8. ### math

A boat traveled 210 miles downstream and back. The trip downstream took 10 hours. The trip back took 70 hours. What is the speed of the boat in still water. What is the speed of the current?
9. ### algebra

A boat's crew rowed 13.5 miles downstream, with the current, in 1.5 hours. The return trip upstream against the current covered the same distance, but took 4.5 hours. Find the crew's rowing rate in still water and the rate of the
10. ### Algerbra

A boat's crew rowed 10.5 miles downstream, with the current, in 1.5 hours. The return trip upstream, against the current, covered the same distance, but took 3.5 hours. Find the crew's rowing rate in still water, and the rate of

More Similar Questions