SOLUTION: Two cars travelling in opposite directions were 360 km apart at the end of two hrs. If one car travels 6kph faster than the other, find the average speed of the slower car.

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Travel -> SOLUTION: Two cars travelling in opposite directions were 360 km apart at the end of two hrs. If one car travels 6kph faster than the other, find the average speed of the slower car.      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 380457: Two cars travelling in opposite directions were 360 km apart at the end of two hrs. If one car travels 6kph faster than the other, find the average speed of the slower car.
Answer by mananth(12270) About Me  (Show Source):
You can put this solution on YOUR website!
speed of one car = x mph
speed of second car = x+6 mph
..
they are in opposite directions
so add up the speeds
x+x+6 = 2x+6 mph.
distance = 240 miles
..
r=d/t
r=240/(2x+6)
2=240/(2x+6)
multiply by (2x+60
2(2x+6)=240
4x+12=240
-12
4x=240-12
4x=228
/4
x=57 mph speed of one car
speed of other car = x+6 = 57+6 = 63 mph
..
m.ananth@hotmail.ca