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Two numbers are in ratio 4 : 5 and their LCM is 180. The smaller number is
Answer & Solution
Correct Answer:
Option
C
Let two numbers be 4x and 5x
Their LCM = 180 and HCF = x
Now, 1st number × 2nd number = LCM × HCF Or, 4x × 5x = 180 × x Or, 20x = 180 Or, x = 9 Then, the smaller number = 4 × 9 = 36
Now, 1st number × 2nd number = LCM × HCF Or, 4x × 5x = 180 × x Or, 20x = 180 Or, x = 9 Then, the smaller number = 4 × 9 = 36
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Loginhere 36 is the smaller number when compring the LCM of both
lcm of those is 360 not 180 . Can someone explain me ?