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12 Oct 2017, 03:40
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Difficulty:
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68% (01:22) correct
32%
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based on 121
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If a = 2b, 1/2*b = c, and 4c = 3d, then what is the ratio of d to a?
A. 1 : 3
B. 3 : 1
C. 3 : 4
D. 1 : 1
E. 4 : 3
A. 1 : 3
B. 3 : 1
C. 3 : 4
D. 1 : 1
E. 4 : 3
12 Oct 2017, 03:46
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Bunuel
If a = 2b, 1/2*b = c, and 4c = 3d, then what is the ratio of d to a?
A. 1 : 3
B. 3 : 1
C. 3 : 4
D. 1 : 1
E. 4 : 3
A. 1 : 3
B. 3 : 1
C. 3 : 4
D. 1 : 1
E. 4 : 3
\(\frac{1}{2}*b = c\), thus \(b = 2c\);
\(a = 2b = 4c\).
\(4c = 3d\), thus \(d = \frac{4c}{3}\).
\(\frac{d}{a}=\frac{\frac{4c}{3}}{4c}=\frac{4c}{3}*\frac{1}{4c}=\frac{1}{3}\).
Answer: A.
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12 Oct 2017, 04:06
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Bunuel
If a = 2b, 1/2*b = c, and 4c = 3d, then what is the ratio of d to a?
A. 1 : 3
B. 3 : 1
C. 3 : 4
D. 1 : 1
E. 4 : 3
A. 1 : 3
B. 3 : 1
C. 3 : 4
D. 1 : 1
E. 4 : 3
Let b=6.......then a =12, c=3, d=4
\(\frac{d}{a} =\frac{4}{12}= \frac{1}{3}\)
Answer: A
