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Fifteen less than 4 times a number is 9. Find the number.

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#### Solution

Let the required number be x

4 times the number = 4x

15 less than 4 times the number = 4x-15

According to the statement :

4x – 15 = 9

⇒ 4x = 9 + 15

⇒ 4x = 24

⇒ x = 6

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