Question 823743
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s = d / t
s = 270 / 2
s = 135 mph
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x = speed of trainA
y = speed of trainB
s = x + y
y = x + 10
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s = x + x + 10
s = 2x + 10
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2x + 10 = 135
2x = 125
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x = 62.5
y = 72.5
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answer:
speed of trainA = 62.5 mph
speed of trainB = 72.5 mph
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