Question

Find LCM of 12 and 72 if it's HCF is 12.
​

Answer 1

Step-by-step explanation:

The LCM and HCF of two numbers are 12 and 72, and the addition of two numbers is 60. What are the numbers?

Let the two numbers be x and y.

We know that.. product of two numbers = HCFx LCM.

Therefore XY= 12 x 72= 864….(1)

According to given condition, their sum is 60

Therefore x+y = 60……….(2)

We know that

(x-y)² =(x+y)² -4xy

Substitute values from 1 & 2

(X-y)² = 3600–4x864=144

X-Y =√144= 12…(3)

By solving 2 and 3

We get x=36 and y=24.

Answer 2

Step-by-step explanation:

there are all steps in the pic this is the method of 10 th class