there was only 10% off the price of the dress. what did it cost before the sale..

the dress is now $270 and the % has been taken off.??? help.. how do u do it?

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there was only 10% off the price of the dress. what did it cost before the sale..

the dress is now $270 and the % has been taken off.??? help.. how do u do it?

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## Answers (3)

10% has been taken off, so $270 is 90% of the original price.

If the original price is X, then 90% of X = $270.

Therefor X = $270 / (90%) = $270 / (0.9) = $300

Reference:www.google.co.uk/search?hl=en&safe=off&q=270%2F0.9&meta=$270 x 0.1 (thats 10% written as a decimal)= You saved 27 dollars.

So $270 + $27= $297

let x = the price of the dress

x * (1 - .1) = 270

.9x = 270

x = $300

This is basically saying that 90%, which is 10% less than the full 100%, of the price of the dress is equal to $270