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deepak_free wrote:Both a and b are positive; what is the value of a?
(1) 150 percent of a equals 450 percent of b.
(2) ab is the cube of a positive integer.
The st 2 says that X is a positive integer..is n't it???deepak_free wrote:Do you really think
3b^2=X^3
will result only in 3 even if it is not provided that x is an integer
barcebal wrote:Just because, when combining statements 1 and 2, the cube root of 3b^2 equals an integer doesn't mean that b has to be 3.
B could also be 81.
3(81^2)=27^3
Therefore both are insufficient.
Hope that helps.
A is 3 times b, not the other way around.outreach wrote:if b=81 then a=27
now 2781 is not a cube root of any number
so it will be incorrect..
any opinion on the same??
barcebal wrote:Just because, when combining statements 1 and 2, the cube root of 3b^2 equals an integer doesn't mean that b has to be 3.
B could also be 81.
3(81^2)=27^3
Therefore both are insufficient.
Hope that helps.
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