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QA – Placement Quizzes | LCM | Question 3

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  • Last Updated : 28 Jun, 2021
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Two numbers are in the ratio 3 : 5. If their L.C.M. is 75. what is sum of the numbers?
(A) 25
(B) 45
(C) 40
(D) 50


Answer: (C)

Explanation: 1st number = 3x
2nd number =5x

LCM of 3x and 5x is 15x

=> 15x = 75

=> x = 5

sum = 15+25 =40


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