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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
- A140
- B80
- C60
- D70
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0
CCommunity
Answer for this question is option 4
0
CCommunity
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
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