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Answer :
Answer:
83 mph
Step-by-step explanation:
Their combined speed is 540 mi/(3 h) = 180 mi/h. The eastbound train's speed will be half this, less half the difference: 180/2 - 14/2 = 83 mi/h.
_____
If s represents the slower train's speed, then ...
s + (s +14) = 180 . . . . the sum of the train speeds is 180 mph
2s + 14 = 180 . . . . . . .simplify
2s = 180 -14 . . . . . . . .subtract 14
s = 180/2 -14/2 = 83 . . . . divide by 2
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