The proportion among three numbers is 3

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

HCF and LCM

Question:

The proportion among three numbers is 3 : 4 : 5 and their LCM is 1800. The second number is:

Options:

150

120

Correct Answer:

120

Explanation:

The proportion among three numbers is 3 : 4 : 5 and their LCM is 1800. The second number is =

Let the numbers be 3m, 4m, and 5m respectively.

= LCM of (3m, 4m, 5m) = 1800

= 60m = 1800, m = 30

=So, the second number = 4m = 120