SOLUTION: shelly spent 70% of her money. She had $900 left. How much money she had at first?

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Question 994625: shelly spent 70% of her money. She had $900 left. How much money she had at first?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
If she spent 70% of her money, then the 30% she has left is $900.
Let x be the amount she started with.
Thus,
30% of x is $900 or
.3x = 900 and
x = $3000