Question

find the number whose 20% is 90​

Answer 1

Answer:

Let the number be x.

So, ATQ....

20% of x = 90

-> x X 20/100 = 90  

-> x = 90 X 100/20

-> x = 450.

Hence, the number is 450.

Step-by-step explanation:

Answer 2

Answer :-

let the number be x

then,

$\bold{: \implies x \times \cancel\frac{20}{100} = 90} \\ \\ \bold{ : \implies \: x \times \frac{1}{5} = 90} \: \: \: \: \\ \\ \bold{: \implies \frac{x}{5} = 90} \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \bold{: \implies x = 90 \times 5} \: \: \: \: \: \\ \\ \bold{: \implies x = 450} \: \: \: \: \: \: \: \: \: \:$

so, 20% of 450 is 90

hence, the number is 450