# SOLUTION: The ratio between the acceleration rates of two automobiles is 4 to 3. The car with the faster rate can go from 0 km/h to 80 km/h in 9 seconds. How long will it take the slower car

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: The ratio between the acceleration rates of two automobiles is 4 to 3. The car with the faster rate can go from 0 km/h to 80 km/h in 9 seconds. How long will it take 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!

 Word Problems: Mixtures Solvers Lessons Answers archive Quiz In Depth

 Question 549594: The ratio between the acceleration rates of two automobiles is 4 to 3. The car with the faster rate can go from 0 km/h to 80 km/h in 9 seconds. How long will it take the slower car to go from 0 km/h to 80 km/h?Answer by mathie123(224)   (Show Source): You can put this solution on YOUR website!Okay let's see what the ratio really means. for every 4 km/h that the fast car accelerates, the slower car only accelerates 3 km/h. Looking at the fast car: So one "unit" in our ratio is 20 km/h. So for the fast car to do 4 units (80 km), the slower car only accelerates up to in 9 seconds. Now, if it took the slow car 9 seconds to get up to 60 km/h, this means it took him 3 seconds to accerlerate 20 km/h. This means that it will take him another 3 seconds on top of the 9 seconds (since 60+20=80). So it will take the slower car 9+3=12 seconds to do the same amount of acceleration. I hope this helps a bit.. Let me know if you are still unsure!:)