10
Answer: CSet 16: Linear Equations (Advanced)
Explanation
Runner A starts at 0 and runs at 6 m/s. Runner B starts at 100m and runs at 4 m/s in the same direction. When will A catch B?
How many seconds?
A.
100
B.
Never
C.✓ Correct
50
D.
25
Detailed Explanation
Choice C is correct. Pos A = 6 t. Pos B = 100 + 4 t. 6 t = 100 + 4 t. 2 t = 100. t = 50.
Key Steps:
•
The correct answer is 50
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.
D: Choice D is incorrect and may result from a calculation error.
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