Question

Write a number is reduced by 10% it becomes 72 what is the number

Answer 1

Let the number be x.

Then,

x-10x/100=72=>x=80

Therefore,Number is 80.

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Answer 2

Let the number be x

According to the question

x - 10% =72

x-10x/100 =72

x-x/10=72

(10x-x)/10=72

9x/10=72
9x = 72×10
x = 720/9
x = 80

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