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Q.
The H.C.F and L.C.M of two numbers are 84 and 21 respectively. If the ratio of the two numbers is 1 : 4 , then the larger of the two numbers is
A.
12
B.
48
C.
84
D.
108
View Answer
Correct choice: C
Explanation:
Let the numbers be x and 4x. Then, x×4x=84×21 ⇔ x2=84×21/4⇔ x=21 Hence Larger Number = 4x = 84
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