SOLUTION: Robert and jones who live 676 miles apart meet 6.5 hours of driving time. If the average spped differs by 4 what are their average speeds.

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Question 128945This question is from textbook college Algebra
: Robert and jones who live 676 miles apart meet 6.5 hours of driving time. If the average spped differs by 4 what are their average speeds.
 This question is from textbook college Algebra

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
6.5(X+X+4)=676
6.5(2X+4)=676
13X+26=676
13X=676-26
13X=650
X=50 MPH IS THE SPEED OF THE SLOWER DRIVER.
50+4=54 MPH IS THE SPEED OF THE FASTER DRIVER.
PROOF:
6.5(50+54)=676
6.5*104=676
676=676