SOLUTION: A car travels 20 kph faster than the truck. The car covers 350 km in two hours less than the time it takes the truck to travel the same distance. What is the speed of the car? How

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: A car travels 20 kph faster than the truck. The car covers 350 km in two hours less than the time it takes the truck to travel the same distance. What is the speed of the car? How       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 885335: A car travels 20 kph faster than the truck. The car covers 350 km in two hours less than the time it takes the truck to travel the same distance. What is the speed of the car? How about the track?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
r = speed of truck
t = time for the truck

__________________speed___________time__________distance____Equations
CAR_______________r+20____________t-2___________350_________%28r%2B20%29%28t-2%29=350
TRUCK______________r______________t_____________350___________rt=350

The system of equations will produce a quadratic equation, and you will need the truck's equation for substitution two ways.