Find the Larger of the Two Numbers :

The H.C.F and L.C.M of two numbers are 21 and 84 respectively. If the ratio of the two number is 1:4, then the larger of the two numbers is

  1. 84
  2. 12
  3. 108
  4. 48
Anurag Mishra Professor Asked on 26th October 2015 in Maths.
Add Comment
1 Answer(s)

Answer is (1): 84

Explanation:-

The H.C.F. and L.C.M of two numbers = 21 and 84
The ratio of two numbers = 1: 4
Let the two numbers be = X and 4 X

Then, X x 4 X = 21 x 84
 4 X^2 = 1764
X^2 = 1764/4
X^2 = 441
square root on both side,
X = 21

Then, the large number = 4 X = 4 x 21 = 84

Hence, the answer is (1) 84.

Monis Rasool Professor Answered on 28th October 2015.
Add Comment

Your Answer

By posting your answer, you agree to the privacy policy and terms of service.