A hypothesis is often written as an if/then statement or prediction law theory guess. A hypothesis is also known as an educated guess.
Your answer is: Hypothesis
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Answer:
Explanation:
Given
distance traveled by Passenger train is
distance traveled by Freight train is
Both take same time to travel
suppose speed of freight train is x mph
so speed of passenger train is 20+x mph
we know time
speed of passenger train
..............................................A