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When a number is reduced by 4, it becomes 80% of himself. Find the number
commented by (10.4k points)
Dont forget to explain.

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Best answer
Let the numerical be x.

If reduced by 4 the reduced number =(x-4)

By the problem

x-4=x*80*/100

=>x-4=4x/5

=>x-4x/5=4

=x/5=4

=x=20

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