Question

What is the number? I) 20% of that number is 1/5 th of that number ii) three-fifth of that number is less by 18 of that number?

Answer 1

1st number is 100
2nd number is 45

1st
$x \times \frac{1}{5} = x \times \frac{20}{100}$
2nd
$y \times \frac{3}{5} = y - 18$