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Re: a, b, and c are integers greater than 1 [#permalink]
Expert Reply
Sir

With all respect I am here to help the students and I suggested you reinforce your fundamental math skills

Now

Manipulating the stem we do have that

5b=5+a

b=5+a/5

or

b=1+a/5

we know that a and b are integers >1

suppose b is 2

2=1+a/5

to have 2 then a must be 5

2=1+5/5=1+1=2

Alike if b=3 a must be 10

3=1+10/5=1+2=3

A > B

A is the answer
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a, b, and c are integers greater than 1 [#permalink]
From the way I see it... since C not equal to 0, 1, -1, then C = C. as such we get 5b = 5+a. Divide 5 both sides to get b = 1+a but we know that a > 1. Therefore so b > a? or better still the relationship can't be determined since using matching operations gives us A and other means give us B. No?
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Re: a, b, and c are integers greater than 1 [#permalink]
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I am not sure That I got what you mean sir

we have that 5b-5=a

So, substituting in QA we have 5b-5

Comparing the two quantities we do have that

5b-5=b

Moving around 5b-b=5

4b -5 =0

Now is logic: to have zero 4b must be 5 to have zero. 5-5=0

B must be 1.25 but the question tells us that b must be an integer. At this point clearly b is < a
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Re: a, b, and c are integers greater than 1 [#permalink]
Thanks for your prompt response Carcass.. just as you simplified a = 5b - 5 does this mean we can't say b = 5 + a/5? because we do the latter, it will give us B > A.
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Re: a, b, and c are integers greater than 1 [#permalink]
1
Ykayonu wrote:
Thanks for your prompt response Carcass.. just as you simplified a = 5b - 5 does this mean we can't say b = 5 + a/5? because we do the latter, it will give us B > A.

Hi,

Even when you say B = 5 + A/5, A is still greater than B. For instance, when A = 10, B = 7.

Likewise when you say A = 5B-5, when B = 2, A = 5.

In either case, A > B

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Re: a, b, and c are integers greater than 1 [#permalink]
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