SOLUTION: A train traveled at 140 miles per hour for 2 1/14x hours, and (2x -3) miles per hour for the next 3 hours. a) Express the total distance traveled by the train in terms of x.

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Question 1057319: A train traveled at 140 miles per hour for 2 1/14x hours, and (2x -3) miles per hour for the next 3 hours.
a) Express the total distance traveled by the train in terms of x.
? 140(2 1/14x)+3(2x-3) ?
b) If x = 3, what is the total distance traveled by the train?

Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
Constant Travel Rate Rule, RT=D.

140%282%261%2F14%29x%2B%282x-3%29%2A3
SIMPLIFY the expression!!

How about Distributive Property, and your simple knowledge of fractions?
140%282%2B1%2F14%29x%2B3%282x-3%29

280x%2B10x%2B6x-9, and you can finish this; right?