Sunday

December 21, 2014

December 21, 2014

Posted by **Rebecca** on Wednesday, January 4, 2012 at 3:26pm.

- 7th Grade Math -
**Steve**, Wednesday, January 4, 2012 at 4:22pmSince they are heading north and south, let the southern speed be s, so the northern speed is s+5

After 1.5 hours, the distance is 40.5km

distance is speed * time

40.5 = (s + s+5) * 1.5

27 = 2s+5

22 = 2s

s = 11

so, the cyclist going south moves at 11km/hr, north at 16 km/hr

they are moving apart at 27km/hr, so at 1.5 hours they are 40.5 km apart.

**Answer this Question**

**Related Questions**

8th grade math - One of your friends is heading north for the Christmas holiday ...

math - one of your friends is heading north for a holiday and the other is ...

math - One of your friends is heading north for the Christmas holiday and the ...

Math - One of your friends is heading north for the Christmas holiday and the ...

7th Grade Math - Write one or two equations to represent the situation below. ...

Help w/this one again(Math!!) - Write one or two equations to represent the ...

math - A northbound train and a southbound train meet each other on parallel ...

Math - An eastbound train and a westbound train meet each other on parallel ...

MATHHH!!!! PLEASE HELP - An eastbound train and a westbound train meet each ...

physics - Two bicyclists, starting at the same place, are riding toward the same...