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20-09-2022
Mathematics

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When a number is decreased by 10% of itself, the result is 27. What is the number? Write an equation to model the problem

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hmktanky hmktanky

20-09-2022

Answer: [tex]x-0.1x=27[/tex]

Step-by-step explanation:

Let x be the number that gets decreased by 10% of itself.

x decreased by 10% of x is 27.

x is 100%, so 100%-10%=90%

So, 90% of x equals 27.

90% = 0.9

0.9x = 27

x = 30

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