1. what percent of $90 is $9?
show your work

10
%

Explanation:
If
$
90
is
100
%
, then
$
9
would be
10
%
.
This is because:
$
90
is
100
%
because this is the total.
$
9
is
x
%

You can see that the
$
9
is a tenth of the total value of
$
90
, i.e:
$
90
$
10
=
$
9

Therefore, the fraction of
1
10
is equivalent to
0.1
and this is the decimal representation of the percentage of
10
%
.