1
Answer: DSet 8: Linear Equations
Explanation
A car travels at 60 mph. How many hours will it take to travel 240 miles?
Trains leave station from opposite directions. Train A: 60mph, Train B: 90mph. How long until 450 miles apart?
How many hours?
A.
6
B.
3
C.
5
D.✓ Correct
4
Detailed Explanation
Choice D is correct. d = rt. 240 = 60 t. Divide by 60: t = 4.
Key Steps:
•
The correct answer is 4
Why others are wrong:
A: Choice A is incorrect and may result from a calculation error.
B: Choice B is incorrect and may result from a calculation error.
C: Choice C is incorrect and may result from a calculation error.
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