enigma123 wrote:
What is the value of integer x?
1. The LCM of x and 45 is 225
2. The LCM of x and 20 is300.
[Reveal] Spoiler:
My answer:
Considering statement 1
x * 3^2 * 5 = 3^2 * 5^2
Therefore to make LCM 3^2 and 5^2 we need more 5 on the left handside. Because if I take 25 then the LCM will be 3^2 and 5^3 which is not correct. So I have just one value which is 5, so this statement should be sufficient. But its not. The correct answer is C. Can someone please explain how? Thanks in advance guys.
Considering statement 1
x * 3^2 * 5 = 3^2 * 5^2
Therefore to make LCM 3^2 and 5^2 we need more 5 on the left handside. Because if I take 25 then the LCM will be 3^2 and 5^3 which is not correct. So I have just one value which is 5, so this statement should be sufficient. But its not. The correct answer is C. Can someone please explain how? Thanks in advance guys.
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