Question

The HCF and LCM of two numbers are 10 and 140 respectively. If one of the no is 70.find the other number

Answer 1

HCF*LCM = Product of 2 numbers. HCF*LCM/No 1 =No 2. 10*140=1400. 1400/70 = 200 therefore other number = 200

Answer 2

Let the second number be x
x = (HCF × LCM) ÷ First number
x = $\frac{10*140}{70}$
x = 20