SOLUTION: I need help about: Tow cars start from the same point travelling in opposite directions. One car average 6 mph faster than the other car. Find their speed if after 5{{{1/2}}}hr th

Algebra ->  Rate-of-work-word-problems -> SOLUTION: I need help about: Tow cars start from the same point travelling in opposite directions. One car average 6 mph faster than the other car. Find their speed if after 5{{{1/2}}}hr th      Log On


   

Question 202009: I need help about:
Tow cars start from the same point travelling in opposite directions. One car average 6 mph faster than the other car. Find their speed if after 51%2F2hr they were 528 miles apart.
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
d=rt
528=(x+x+6)5.5
528=11x+33
11x=528-33
11x=495
x=45
x+6=51
(45+51)(5.5)=528