Posted by **Erica** on Sunday, October 12, 2008 at 12:48pm.

Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in the same time it takes to bike 63 km with the wind. What is the speed of the wind?

- Help - math -
**Ms. Sue**, Sunday, October 12, 2008 at 12:50pm
This school subject is math.

- Help - Erica, Math -
**GuruBlue**, Sunday, October 12, 2008 at 12:51pm
Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in the same time it takes to bike 63 km with the wind. What is the speed of the wind?

- Help -
**bobpursley**, Sunday, October 12, 2008 at 12:54pm
You have to assume in this case the wind retards and assists with the same force, which is not usually true.

Vrg=Vrgs+Vwind

where Vrg is net velocity relative to ground, Vrgs is velocity relative to ground in still conditions, and Vwind is the velocity of the wind.

Vrgs=32

33km/time=32km/hr-Speedwind

63km/time=32km/hr+speed wind.

add the equations...

33+63)km/time=64km/hr

then time= 96/64 hr

Now solve for speed of wind in the first equation..

33km/time=32km/hr-speedwind.

## Answer This Question

## Related Questions

- Math word problem - Erik bicycles 32 km/h with no wind. Against the wind he ...
- English - 1. He died young. 2. He died when he was young. 3. When he was young, ...
- math - A jet takes the same time to travel 2500km with the wind as it does to ...
- maths - an aeroplane takes 40 minutes less to fly 3600km with the wind blowing ...
- Algebra 2 - An airplane flies 1050 km with the wind. In the same amount of time...
- English 4 - When the speaker of “Ode to the West Wind” speaks of the impulse of ...
- algebra - A jet flies with the wind at 1100 km/hr and 750 km/hr against the same...
- algebra - A plane takes 3 hours to travel 1500 miles with the wind. it can ...
- Algebra - A plane has a cruising speed of 100 miles per hour when there is no ...
- ALGEBRA 1 - A JET FLIES WITH THE WIND AT 1100km/hr and 750 km/hr against the ...

More Related Questions