<PRE><B>Question 1174190</B>
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&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;I will answer question &amp;nbsp;#1, &amp;nbsp;only.



&lt;pre&gt;
Let x be the cost price of the pillow.


The shop sold the pillow at 240*0.8 = 192 dollars.


The profit was 28%.  It means that 


    192 - x = 0.28x,

or

    192 = 0.28x + x = 1.28x.


Hence,  x = {{{192/1.28}}} = 150.


&lt;U&gt;ANSWER&lt;/U&gt;.  The cost price (the buying price) of the pillow was 150  dollars.
&lt;/pre&gt;

Solved.



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