Friday

November 28, 2014

November 28, 2014

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

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 4:23pmlet 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 4:32pmthanks!!!!!!!

**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 ...

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 ...

8th Grade Math - Tom was floating down the river on a raft when, 1km lower down...

intermediate algebra - Rowing. Abby rows 10km. upstream and 10km. back in a ...

Maths - Tom was floating down the river on a raft when, 1km down, Michael took ...