Question

20 is 40% of what number

Answer 1

50

Explanation:

Answer 2

is means equal

of means multiplication

so

20 = 40% x a

40% = 40/100 = 4/10 = 2/5

So

20 = 2/5 x a

Multiply both sides by 5/2

20 x 5/2 = a

10 x 5 = a

a =50

So your final answer is
`\boxed{\bf{50}}`