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If LCM of x and y is 24 and LCM of z and w is 30, what is the LCM of x
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06 Aug 2024, 23:27
06 Aug 2024, 23:27
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Question Stats:
85% (01:24) correct
14% (02:02) wrong based on 7 sessions
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If LCM of x and y is 24 and LCM of z and w is 30, what is the LCM of x, y, z and w?
A. 30
B. 60
C. 72
D. 100
E. 120
A. 30
B. 60
C. 72
D. 100
E. 120
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Shorter GRE - Preparing for the Quantitative Reasoning Measure
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Re: If LCM of x and y is 24 and LCM of z and w is 30, what is the LCM of x
[#permalink]
07 Aug 2024, 06:21
07 Aug 2024, 06:21
1
prime factorize the numbers
so, 24 = 2^3 x 3^1
& 30 = 2^1 x 3^1 x 5^1
take the prime factor with the highest power from each column of prime factors
so,
2^3 x 3^1 x 5^1
= 120
hope this helps
so, 24 = 2^3 x 3^1
& 30 = 2^1 x 3^1 x 5^1
take the prime factor with the highest power from each column of prime factors
so,
2^3 x 3^1 x 5^1
= 120
hope this helps
gmatclubot
Re: If LCM of x and y is 24 and LCM of z and w is 30, what is the LCM of x [#permalink]
07 Aug 2024, 06:21
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