Question

Answer these questions.
45% of 40 is 18% of what number?

Answer 1

45% of 40 is 18% of 100

Explanation:

Let 45% of 40 = 18% of x .

Taking LHS (Left Hand Side):

45% of 40

`\Rightarrow (45)/(100) * 40\\\Rightarrow (1800)/(100)\\\Rightarrow 18 ...... (1)`

Taking RHS(Right Hand Side):

18% of x

`\Rightarrow (18)/(100) * x\\\Rightarrow 0.18 * x ...... (2)`

Equating (1) and (2):

`18 = 0.18 * x\\\Rightarrow x= (1800)/(18)\\\Rightarrow x = 100`

Hence, 45% of 40 is 18% of 100.