SOLUTION: Train "A" leaves Little Rock, Arkansas, and travels north at 65 kilometers per hour. Another train "B" leaves at the same time and travels south at 75 kilometers per hour. How long
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Question 54452: Train "A" leaves Little Rock, Arkansas, and travels north at 65 kilometers per hour. Another train "B" leaves at the same time and travels south at 75 kilometers per hour. How long will it take before they are 280 kilometers apart? Use the six step method. Answer by tutorcecilia(2152) (Show Source):
You can put this solution on YOUR website! I am not sure what the "six-step method" is, but I would set it up using the distance formula: distance = (rate)(time)
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Train A: distance (A)=(65mph)(time)
Train B: distance (B)=(75mph)(time)
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Train A + Train B = 280 miles, than
65t + 75t = 280
140t=280
t=280/140
t=2 hours before they are 280 miles apart.
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Check by plugging (t=2) back into each equation.
Train A: distance (A)=(65mph)(2)=130 miles
Train B: distance (B)=(75mph)(2)=150 miles
130 miles + 150 miles = 280 total miles
