Question

A number decreased by 10 % gives the answer 72 what is the number?

Answer 1

Answer: 64.8

Step-by-step explanation:

x - 10% = 72

x = 72 - 10 %

therefore x = 64.8

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Answer 2

Answer:

let the no. be x

according to the question above

=>x-10 percent =72

=>x-10/100=72

=>(100x-10x)/100=72

=>90x/100=72

=>90x=72×100

=>90x=7200

=>x=7200/90

=>x=80

therefore the no is 80

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