SOLUTION: A car travels 100 mph for the first half of a 400 mile race. How fast must the car go to average 200 mph?

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Travel -> SOLUTION: A car travels 100 mph for the first half of a 400 mile race. How fast must the car go to average 200 mph?      Log On

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

   

Question 158345: A car travels 100 mph for the first half of a 400 mile race. How fast must the car go to average 200 mph?
Answer by atique.ah(23) About Me  (Show Source):
You can put this solution on YOUR website!
A car travels 100 mph for the first half of a 400 mile race. How fast must the car go to average 200 mph?
solution:
let us first find te time required to complet 400 miles at 200 mp
400miles/200 miles/hour =2hour.
as the 2 hours are already consumed there is no way to achieve an average speed
of 200mph from this point.