Question

120%of80=240of ?% can you solved this
​

Answer 1

Step-by-step explanation:

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