# Chapter 1 - Section 1.5 - Problem Solving and Using Formulas - Exercise Set - Page 69: 91

$200 #### Work Step by Step Let$x$be the original price for the dress. When the price of the dress gets reduced by a first number 40 % or$\dfrac{40}{100}$then it can be expressed as$(x-\dfrac{40}{100}x)$After second reduction , we will come to$x-0.4x-(x-0.4x)0.4=72$or,$x-0.4x-0.4x+0.16x=72$or,$0.36 x=72$or,$x= 200 $Thus, the original price of the dress was$200

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