The highest common factor (hcf) of 140 and x is 20

the lowest common multiple (lcm) of 140 and x is 420

find the value of x

x=60

Step-by-step explanation:

Given that ,

HCF of 140 and x=20,

LCM of 140 and x =420.

Solution:

It is known that the product of two numbers is equal to the product of their HCF and LCM, i-e:

140*x= HCF*LCM

Putting in the values provided,

140*x=20*420

140*x=8400

x=8400/140

x=60

Hence the variable x is 60.

1010: 3030

is it i think

a

step-by-step explanation: