213) IMO : X/Y
From the given system :
x^2=wy
y^2=xz
Hence,
x^2/y^2 = wy/xz
Reducing, W/Z= X/Y
187,189) Find the value!
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xcusemeplz2009
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sanjana wrote:213) IMO : X/Y
From the given system :
x^2=wy
y^2=xz
Hence,
x^2/y^2 = wy/xz
Reducing, W/Z= X/Y
reducing will result x^3/y^3
It does not matter how many times you get knocked down , but how many times you get up
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NikolayZ
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Hey !ern5231 wrote:212. Abcd is a four integer, ac + bc + ad + bd = 65, | a + bcd | =?
213 W / x = x / y = y / z, then w / z =?
212: ac,bc,ad,bd and bcd are 2 and 3 digit integers ? or multiplying a by b and so on ?
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xcusemeplz2009
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yeah its all same w^3/x^3 or x^3/y^3 or y^3/z^3ern5231 wrote:OA w^3/x^3
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Stuart@KaplanGMAT
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We need more information to answer this question (or at least some clarification).ern5231 wrote:212. Abcd is a four integer, ac + bc + ad + bd = 65, | a + bcd | =?
I assume that the first part should read:
"Abcd is a four digit integer".
However, we need to know if ac is a two-digit integer or if it's the product of a and c (i.e. a*c), which is normally what it would represent. We need similar clarification for bc, ad, bd and bcd.
When you post questions, please take the time to type them out carefully so that we have all necessary information.
I'm also not sure why a + bcd is in absolute value form; since a, b, c and d are digits, they're by definition positive.
Finally, please always provide the answer choices and the source of the question; had you done so, we probably could have reverse engineered it and figured out how it was supposed to read. Further, understanding how to use answer choices effectively is essential to GMAT success.
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mehravikas
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Can you explain how is it same? I am confused.
xcusemeplz2009 wrote:yeah its all same w^3/x^3 or x^3/y^3 or y^3/z^3ern5231 wrote:OA w^3/x^3
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nithi_mystics
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When a/b = c/d,mehravikas wrote:Can you explain how is it same? I am confused.
xcusemeplz2009 wrote:yeah its all same w^3/x^3 or x^3/y^3 or y^3/z^3ern5231 wrote:OA w^3/x^3
(a/b)^n = (c/d)^n
For example,
take a=4, b=2, c=6 and d=3
4/2 = 6/3 and you can substitute any value for n to check if 4^n/2^n = 6^n/3^n
2^n is always equal to 2^n
Thanks
Nithi
Nithi
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mehravikas
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Ok got it now...basically the answer is to confuse people
but x^3/y^3 is same as w^3/x^3
but x^3/y^3 is same as w^3/x^3
nithi_mystics wrote:When a/b = c/d,mehravikas wrote:Can you explain how is it same? I am confused.
xcusemeplz2009 wrote:yeah its all same w^3/x^3 or x^3/y^3 or y^3/z^3ern5231 wrote:OA w^3/x^3
(a/b)^n = (c/d)^n
For example,
take a=4, b=2, c=6 and d=3
4/2 = 6/3 and you can substitute any value for n to check if 4^n/2^n = 6^n/3^n
2^n is always equal to 2^n
