Question

20=x-40000/40000×100​

Answer 1

20=x-40000/40000×100

20=x-100

x= 120 is the answer

Answer 2

Step-by-step explanation:

$20=x-40000/40000×100 \\ = 20x = \frac{40000}{400000} \times 100 \\ = 20x = \frac{1}{10} \times 100 \\ \\ = 20x = 10 \\ \\ = x = \frac{10}{20} \\ \\ = = \frac{1}{2} \\ \\ = 0.5$