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03 Jul 2020, 05:33
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
88% (01:19) correct
13%
(02:06)
wrong
based on 55
sessions
History
Date
Time
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Not Attempted Yet
Let the operation \(\blacklozenge\) and \(\blacksquare\) be defined for all numbers r and s as
\(r\) \(\blacklozenge\) \(s\) \(= 6r+s\)
\(r\) \(\blacksquare\) \(s = 2r+s\)
If \(6x\) \(\blacklozenge\) \(8=34\) \(\blacksquare\) \(6x\), what is the value of x ?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
\(r\) \(\blacklozenge\) \(s\) \(= 6r+s\)
\(r\) \(\blacksquare\) \(s = 2r+s\)
If \(6x\) \(\blacklozenge\) \(8=34\) \(\blacksquare\) \(6x\), what is the value of x ?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
03 Jul 2020, 05:48
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Explanation:
6x⧫ 8=34 ■6x
36x+8 = 68+6x
30x=60
x=2
IMO-B
6x⧫ 8=34 ■6x
36x+8 = 68+6x
30x=60
x=2
IMO-B
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03 Jul 2020, 05:55
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r ⧫ s =6r+s
r ◼ s=2r+s
6x ⧫ 8 = 34 ◼ 6x,
36x+8 = 68+6x
30x = 60
x = 2
Answer is B
r ◼ s=2r+s
6x ⧫ 8 = 34 ◼ 6x,
36x+8 = 68+6x
30x = 60
x = 2
Answer is B
