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a-b/c-a
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02 Oct 2018, 05:53
02 Oct 2018, 05:53
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81% (00:32) correct
18% (01:00) wrong based on 58 sessions
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\(\frac{a-b}{c-a}\) \(= 1\)
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
average of b and c |
a |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
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Re: a-b/c-a
[#permalink]
02 Oct 2018, 08:47
02 Oct 2018, 08:47
1
amorphous wrote:
\(\frac{a-b}{c-a}\) \(= 1\)
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
average of b and c |
a |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Given: (a - b)/(c - a) = 1
Multiply both sides by (c - a) to get: a - b = c - a
Add a to both sides to get: 2a - b = c
Add b to both sides to get: 2a = c + b
Divide both sides by 2 to get: a = (c + b)/2
Quantity A = the average of b and c
In other words, Quantity A = (b + c)/2
So, we have:
Quantity A: (b + c)/2
Quantity B: a
Well, from the given information, we learned that a = (c + b)/2
Answer: C
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Re: a-b/c-a
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11 Jul 2022, 09:02
11 Jul 2022, 09:02
1
A - B / C - A = 1
Quantity A: average of b and c
Quantity B: a
A - B = C - A
2A = C + B
A = (C + B)/2
Correct answer: C. The two quantities are equal.
A equals to the average of C & B
Quantity B = Quantity A
Quantity A: average of b and c
Quantity B: a
A - B = C - A
2A = C + B
A = (C + B)/2
Correct answer: C. The two quantities are equal.
A equals to the average of C & B
Quantity B = Quantity A
