The LCM and HCF of two numbers are 84 and 21 respectively. If the ratio of the two numbers is 1: 4, then the larger of the two number is ?
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52
let the numbers be x,4x.
given,
HCF=21
LCM=84
We know that , LCM × HCF=1st number × 2nd number
84×21=x×4x
1764=4x^2
1764/4=x^2
441=x^2
x=21
therefore one number is 21 and other is 84(21×4).
given,
HCF=21
LCM=84
We know that , LCM × HCF=1st number × 2nd number
84×21=x×4x
1764=4x^2
1764/4=x^2
441=x^2
x=21
therefore one number is 21 and other is 84(21×4).
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0
Answer:
84
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