four fith of number is twenty less than original number find the number
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let the original number is x
4x/5 = x-20
x-4x/5 = 20
x/5 =20
x = 100
the original number is 100
4x/5 = x-20
x-4x/5 = 20
x/5 =20
x = 100
the original number is 100
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