Question

Subtracting 20% from x is same as multiplying x by what number

Answer 1

multiply it by 8/10

we get the same because when 20%is subtracted 80%remains that is 80/100=8/10 of total

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《☆Hope it helps you ☆》

Answer 2

Answer:

Let the number be y.

So, According to the question

xy = x-20

y = (x-20)/x

Since, it is not mentioned that x is positive or negative number etc.

we take x as a real number.

Thus, For infinite values of x we have infinite values of y.

Except x = 0 as for x = 0 value of y is not defined.

For Example,

If the number is x = 2

then y = ( 2 - 20)/2 = -9

If the number is x = 6

then y = (6 - 20)/2 = -7