SOLUTION: Bob and Joe are going on a 281 mile trip. Bob drives half of the way at a rate of 53 mph. Joe drives the other half of the way at a rate of 51 mph. How long does Bob drive? How l

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Question 367352: Bob and Joe are going on a 281 mile trip. Bob drives half of the way at a rate of 53 mph. Joe drives the other half of the way at a rate of 51 mph. How long does Bob drive? How long does Joe drive?
Found 2 solutions by rfer, checkley77:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
281/2=140.5
140.5/53=2.65 hrs=2hr 39 min
140.5/51=2.75 hrs=2 hrs 45 min

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
281/2=53T
140.5=53T
T=140.5/53
T=2.65 HOURS IS BOB'S DRIVE TIME.
140.5=51T
T=140.5/51
T=2.755 HOURS IS JOE'S DRIVE TIME.
PROOF:
281=(53*2.65)+(51*2.755)
281=140.5+140.5
281=281