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14 Mar 2019, 23:52
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
65% (02:55) correct
35%
(02:25)
wrong
based on 93
sessions
History
Date
Time
Result
Not Attempted Yet
John ordered 4 pairs of black socks and some additional pair of blue socks. The price of the black socks per pair was twice that of the blue. When the order was filled, it was found that the number of pairs of the two colors had been interchanged. This increased the bill by 50%. The ratio of the number of pairs of black socks to the number of pairs of blue socks in the original order was:
(A) 4:1
(B) 2:1
(C) 1:4
(D) 1:2
(E) 1:8
(A) 4:1
(B) 2:1
(C) 1:4
(D) 1:2
(E) 1:8
15 Mar 2019, 00:09
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Correct answer is C.
Using hit and trials
Posted from my mobile device
Using hit and trials
Posted from my mobile device
15 Mar 2019, 00:40
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For the purpose of exam technique: Can set up a table for (where Bla. is Black, Blu. is Blue, Q. is Quantum, P. is Price, T. is Total and Rev. T is Reverse Total
.......Q......P......T.....Rev.T
Bla...4.....2(2)..16....4
Blu...1.....2......2......8
T....................18....12
Luckily A fits in but we need to remember that we need the original or reversed.
Answer is C.
.......Q......P......T.....Rev.T
Bla...4.....2(2)..16....4
Blu...1.....2......2......8
T....................18....12
Luckily A fits in but we need to remember that we need the original or reversed.
Answer is C.
