Question

two numbers have hcf 5 and lcm 100 one such number is 20 find the other

Answer 1

Answer:

HCF = 5

LCM = 100

One number= 20

Other number= ?

${ \underline{ \red{we \: \: know \: \: that}}} \\ \\ \\ product \: of \: two \: numbers = hcf \: \times \: lcm$

Let the other number be x

$20 \times x = 5 \times 100 \\ \\ x = \frac{5\times { \cancel{100}} \: \: ^{5} }{{ \cancel{20}}} \\ \\ x = 5 \times 5 \\ \\{ \boxed{ x = 25}}$

The other number is 25.

Answer 2

Answer:

$x = \frac{5 \times 100}{20} \\ \\ \\ \\ x = 25$