find the number whose 20% is 40
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Step-by-step explanation:
Explanation:
40
x
=
20
100
40
x
⋅
100
=
20
100
⋅
100
4000
x
=
20
4000
⋅
x
x
=
20
⋅
x
4000
=
20
x
4000
20
=
20
⋅
x
20
200
=
x
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