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The proportion among three numbers is 3 : 4 : 5 and their LCM is 1800. The second number is:1. 1502. 1203. 304. 90 |
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Answer» Correct Answer - Option 2 : 120 Given - LCM = 1800 ratio between the number = 3 : 4 : 5 Solution - Let the numbers be 3x, 4x, and 5x respectively. ⇒ LCM (3x, 4x, 5x) = 1800 ⇒ 60x = 1800 ⇒ x = 30 ⇒ second number = 4x = 120 ∴ second number = 120. |
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