SOLUTION: The question is When a number is decreased by 40% of itself is 306. What is the number? I sovled the equation by letting x = the number Then put 40% in decimal form .40 . Sov

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Question 423454: The question is When a number is decreased by 40% of itself is 306. What is the number?
I sovled the equation by letting x = the number
Then put 40% in decimal form .40 .
Sovle the equation x-.40=306
-.40=-.40
x= 665
but the answer is 510.
Please help me solve this equation.

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
The question is When a number is decreased by 40% of itself is 306. What is the number?
I sovled the equation by letting x = the number
Then put 40% in decimal form .40
Sovle the equation x-.40=306
-.40=-.40
x= 665
but the answer is 510.
-----------------------
x - 0.4x = 306
Solve that one.
---------------
I don't see how you got 665. Maybe you meant 765, if you divided by 0.4 ?

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