Question

A sum of the hcf and lcm of two numbers is 680 and the lcm is 84 times the hcf if one of the numbers is 56 the other is

Answer 1

Number A× Number B= HCF × LCM
56×X= 680×84
X=57120/56
x=1020

Answer 2

Let HCF be x then LCM will be 84 x

x+84x=680

85x=680

x=8

Therefore LCM = 84*8=672

LCM * HCF = xy

8*672=x*56

96=x

So,other number is 96