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24 Mar 2018, 07:37
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B
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Difficulty:
95%
(hard)
Question Stats:
23% (02:45) correct
77%
(02:01)
wrong
based on 118
sessions
History
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Robots K, L and M assemble components at their respective constant rates. Does robot L have the greatest constant rate of assembling among the three robots?
(1) The ratio of the constant rates of assembling of K and L is not more than that of L and M.
(2) The ratio of the constant rates of assembling K and L is not less than that of L and M.
Source: TIME (Computer Based Tests Series)
(1) The ratio of the constant rates of assembling of K and L is not more than that of L and M.
(2) The ratio of the constant rates of assembling K and L is not less than that of L and M.
Source: TIME (Computer Based Tests Series)
Statement 1
\(\frac{K}{L}<=\frac{L}{M}\)
\(KM<=L^2\)
We can have K=1, M=2, L=3, which makes L the greatest and the answer to the question is YES.
We can have K=1/4, M=4, L=1, which does not make L the greatest and the answer to the question is NO.
Not sufficient.
Statement 2
\(\frac{K}{L}>=\frac{L}{M}\)
\(KM>=L^2\)
L cant be greater than the greater of (K,M). E.g. if K=3 and M=6, then L cant be greater than 6 and answer to the question is NO.
Sufficient.
Answer: B
\(\frac{K}{L}<=\frac{L}{M}\)
\(KM<=L^2\)
We can have K=1, M=2, L=3, which makes L the greatest and the answer to the question is YES.
We can have K=1/4, M=4, L=1, which does not make L the greatest and the answer to the question is NO.
Not sufficient.
Statement 2
\(\frac{K}{L}>=\frac{L}{M}\)
\(KM>=L^2\)
L cant be greater than the greater of (K,M). E.g. if K=3 and M=6, then L cant be greater than 6 and answer to the question is NO.
Sufficient.
Answer: B
25 Mar 2018, 01:07
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