18 is 20% of what number

20%   of a number means  

20/100    of a number.  

20/100=0.2 we can say that  

 0.2

x

, where  

x

is a number we don't know,  

=

18

.

0.2

x

=

18

Divide both sides by  

0.2

.

x

=

90

We can check this by finding  

20 %

of  

90

and seeing that it is equal to  

18

.

90(0.2)=18

Step-by-step explanation:

180

step-by-step explanation:

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.