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28 vote

L.C.M. of two numbers is 120 and their H.C.F. is 10. Which of the following can be the sum of those two numbers

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L.C.M. of two numbers is 120 and their H.C.F. is 10. Which of the following can be the sum of those two numbers
1). 140
2). 80
3). 60
4). 70

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2 answers

31 vote
Answered by on | Votes 31 |
Answer for this question is option 4

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23 vote
Answered by on | Votes 23 |
Let the numbers be 10x and 10y where x and y are prime to each other. LCM = 10 xy 10xy = 120 xy = 12 Possible pairs = (3, 4) or (1, 12) Sum of the numbers = 30 + 40 = 70




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