Posted by **Angie** on Saturday, January 17, 2009 at 3:39pm.

Toni rows a boat 4.5 km/h upstream and then turns around and rows

5.5 km/h back downstream to her starting point. If her total rowing

time is 48 min, for how long does she row upstream? you can express

your answer to the nearest minute.

I don't understand how you solve it.

- Math -
**Reiny**, Saturday, January 17, 2009 at 4:23pm
let Toni's time rowing upstream be t hours, then his time rowing downstream is

.8-t hours (48 min = .8 hours)

distance upstream = 4.5t

distance downstream = 5.5(.8-t)

but the distance is the same either way, so...

4.5t = 5.5(.8-t)

solve for t

your t will be in hours, so multiply the value of t by 60 and round off.

( I got 26 minutes)

- Math -
**Angie**, Monday, January 19, 2009 at 4:32pm
thanks!!!!!!!

## Answer This Question

## Related Questions

- 7th Grade Math - Toni rows a boat 4.5km/h upstream and then turns around and ...
- Algebra - A boy can row a boat at a constant rate of 5 mi/hr in still water. He ...
- math - a man rows downstream for one hour and 40 minutes on a river flowing at 2...
- algebra - could you please show me how to do this problem? Bob rows 6 miles ...
- College Algebra - A boy can row a boat at a constant rate of 5 mi/hr in still ...
- math - Mr. Tip is working on the marching band's halftime show. During the first...
- math - Rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 hr. ...
- algebra - rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 ...
- Math - Lisa rowed her boat for two miles downstream. The trip took her 20 ...
- Math - Lisa rowed her boat for two miles downstream. The trip took her 20 ...

More Related Questions