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Re: 6^85^34^2/3^68^2 [#permalink]
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Instead of simplifying the whole terms, we can remove the terms which are common in both of the quantities and then compare the remaining parts
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Re: 6^85^34^2/3^68^2 [#permalink]
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Let us remove the terms that are common on both sides
A: 1/8^2
B: (6*4)/(3^2 2^8 )
Lets rewrite A and B in terms of 2 and 3
A: 1/2^6
B: (2*3*2^2)/(3^2 2^8 )
Lets simplify the QTY B
A: 1/2^6
B: 2/3
Hence B is bigger.
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Re: 6^85^34^2/3^68^2 [#permalink]
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let us reduce common terms on both sides:

LHS = 1/3^6 x 8^2
RHS = 6 x4/ 3^8 x 2^8

reduce again:
LHS = 1/8^2
RHS = 6 x4 / 9 x 2^8

LHS = 1/[2^3]^2
RHS = 6x 4/ 2^8

we get LHS denominator as = 1/2^6 and RHS = 6x 4/9 x 2^8
remove 1/2^6 on both sides
we get 1> 2/3
Hence A
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How I did it [#permalink]
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Hey all, I reduced the numbers wherever I could to prime numbers so for example in Quantity A: 4^2 I made (2^2)^2 which is 2^4. Same thing with the 6^8 which in turn is 2^8 and 3^8. 5^3 is already in its prime form. Do the same thing to the 8^2 will convert it to 2^6. Using exponent rules take out 2^6 and 3^6 by subtracting from the numerator. What you're left with is 2^6 3^2 5^3= 72,000. Do the same thing for Quantity B and you should get 48,000. Thus my answer turned out to be that A was greater than B.
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Re: 6^85^34^2/3^68^2 [#permalink]
Seems to be differing opinions here. I tried to follow the posts but it was difficult for my head especially all the carrots and dashes. I think one of the ideas presented was to multiply essentially by 1, but in a different form, to make the two sides match. We can start by ignoring the 5 in each. Then multiply A by 6\frac{6[}{fraction], 4[fraction]4}, 9[fraction][/fraction]9 (3 squared over 3 squared), and 2 squared over 2 squared (for 2 to the sixth power in the denominator). I then could make them match except for 9 in the numerator (3 squared) and a 6 in the denominator, making the ratio 3:2 A:B
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Re: 6^85^34^2/3^68^2 [#permalink]
Upon completely simplifying by canceling out like terms in both quantities. You are left with
A = 1/(3^6 *2)
B = 1/(3^7) which is important to note = 1/ (3^6 * 3)

The denominator in B is larger than A which has the same numerator. Therefore, you know that A is the larger quantity.

Hope this helps.
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Re: 6^85^34^2/3^68^2 [#permalink]
cancel Q1 and Q2 by 6^8 *5^3 * 4^2 to obtain Q1. 1/(3^6 * 8^2) and Q2. 24/(3^8 * 2^8) OR 1/(3^7 * 2^5). Multiply both quantities by 3^6 to obtain Q1. 1/8^2=1/64 and Q2. 1/(3*32)=1/96. Q1>Q2 and answer is A.

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This question is part of GREPrepClub - The Questions Vault Project



Quantity A
Quantity B
\(\frac{6^85^34^2}{3^68^2}\)
\(\frac{6^95^34^3}{3^82^8}\)



A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
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Re: 6^85^34^2/3^68^2 [#permalink]
Since there's disagreement I plugged it into a calculator. A = 72,000. B=48,000.
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6^85^34^2/3^68^2 [#permalink]
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We can cancel \(5^3\) in both quantities and also eliminate \(6^8\) and \(4^2\) and \(3^6\) in Quantity A and B leaving behind

Quantity A

\(\dfrac{1}{8^2}\)

Quantity B

\(\dfrac{6^1 4^1}{3^2 2^8}\)



We can rewrite the denominator in both quantities as

Quantity A

\(2^3 2^3\)

Quantity B

\(3^2 2^3 2^3 2^2\)

We can then cancel \(2^3\) \(2^3\)on both sides, leaving behind

Quantity A

\(\dfrac{1}{1}\)

Quantity B

\(\dfrac{3 \times 2 \times 2 \times 2}{3 \times 3 \times 2 \times 2}\)

finally, we have

Quantity A

\(1\)

Quantity B

\(\dfrac{2}{3}\)

Thus Quantity A is greater.
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