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If 8a – 2 = 22, then 4a – 1 =
[#permalink]
22 May 2017, 01:51
22 May 2017, 01:51
Expert Reply
00:00
Question Stats:
98% (00:16) correct
1% (00:33) wrong based on 192 sessions
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If 8a – 2 = 22, then 4a – 1 =
A) 2
B) \(\frac{11}{4}\)
C) 11
D) 12
E) 44
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Re: If 8a – 2 = 22, then 4a – 1 =
[#permalink]
22 May 2017, 08:32
22 May 2017, 08:32
1
Carcass wrote:
If 8a – 2 = 22, then 4a – 1 =
A) 2
B) \(\frac{11}{4}\)
C) 11
D) 12
E) 44
The fast approach is to recognize that we have (4a + 1) "hiding" in the expression 8a - 2
Given: 8a – 2 = 22
Divide both sides by 2 to get: 4a - 1 = 11
Answer:
Show: ::
C
Alternatively, we could have also solved the given equation first.
Given: 8a – 2 = 22
Add 2 to both sides: 8a = 24
Solve, a = 3
So, 4a - 1 = (4)(3) - 1
= 12 - 1
= 11
Answer:
Show: ::
still C 
Cheers,
Brent
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Re: If 8a – 2 = 22, then 4a – 1 =
[#permalink]
30 Sep 2019, 03:14
30 Sep 2019, 03:14
2
This is a relatively easy question. Do not rely on luck and assume you'd see things like this on the test.
This is so, because this question has no "gotcha" elements (which is uncommon for the real GRE).
Naturally, in every "real" GRE question ask yourself "what is the gotcha here?"
This is so, because this question has no "gotcha" elements (which is uncommon for the real GRE).
Naturally, in every "real" GRE question ask yourself "what is the gotcha here?"
