What is 30% of a number
whose 120% is 108?
Answers
Answered by
0
Step-by-step explanation:
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Answered by
0
Step-by-step explanation:
Explanation:
If we choose
n
as the number, we can write an equation:
30
%
of
n
=
120
←
now solve for
n
30
100
×
n
=
120
n
=
120
×
100
30
n
=
400
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Or we can write equivalent fractions for the numbers and percentages as a direct proportion:
if
120
is
30
%
, then what number will be
100
%
?
120
30
=
x
100
←
numbers
←
percents
30
x
=
120
×
100
←
cross multiply to get this
x
=
120
×
100
30
x
=
400
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