SOLUTION: Two truck drivers leave a cafe at the same​ time, travelling in opposite directions. One truck goes 5 mph faster than the other one. After 4 ​hr, they are 412 miles apa

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Two truck drivers leave a cafe at the same​ time, travelling in opposite directions. One truck goes 5 mph faster than the other one. After 4 ​hr, they are 412 miles apa      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 1126498: Two truck drivers leave a cafe at the same​ time, travelling in opposite directions. One truck goes 5 mph faster than the other one. After 4 ​hr, they are 412 miles apart. How fast is each truck​ going?
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
Let the slow truck be x
The other truck goes x+5
4(2x+5) = 412
8x + 20 = 412
8x = 392
x = 49 mph is the speed of the slow truck
49 + 5 = 54 mph is the speed of the fast truck