Question

The LCM of two number is 28 and of their HCF the sum of their LCM and HCF is 1740 if one number is 240 then what is other number

Answer 1

Plz tell what is hcf ??????

Answer 2

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Given:

LCM of two numbers is 28 times of their HCF.

⟶ LCM = 28HCF -- equation (1)

Sum of their LCM and HCF = 1740

⟶ LCM + HCF = 1740

⟶ 28HCF + HCF = 1740

[ From equation (1) ]

⟶ 29HCF = 1740

⟶ HCF = 1740/29

⟶ HCF = 60

Substitute the value of HCF in equation (1).

⟶ LCM = 28(60)

⟶ LCM = 1680

Also given that,

One of the numbers = 240.

So, Let the other number be x.

We know that,

Product of two numbers = HCF × LCM

⟶ (240)(x) = (60)(1680)

⟶ x = (60)(1680) / 240

⟶ x = 420