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19 Aug 2015, 15:17
Kudos
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What is the ratio of 2x to 3y?
(1) The ratio of x^2 to y^2 is equal to 36/25.
(2) The ratio of x^5 to y^5 is greater than 1.
Why is Option 1 not sufficient.
The answer should always be 6/5, as we are taking the square root right??
(1) The ratio of x^2 to y^2 is equal to 36/25.
(2) The ratio of x^5 to y^5 is greater than 1.
Why is Option 1 not sufficient.
The answer should always be 6/5, as we are taking the square root right??
20 Aug 2015, 10:56
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Shree9975
Dear Shree9975,
I'm happy to respond, my friend.
In this problem, Statement #1 is definitely not sufficient, because both positive and negative roots are possible. You are confusing something that many students confuse, a very subtle distinction that I discuss in this blog:https://magoosh.com/gmat/2012/gmat-quant-roots/
Read that blog very carefully, and I think it will resolve your confusion on this point.
Best of luck!
Mike
