Question 999132
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<U>Answer</U>. &nbsp;80*$0.75 + 20*$1 = $60 + $20 = 80 dollars.


<B>Solution</B>


Let us assume for a minute that all the bars are priced $1 each. 

Then the total cost would be &nbsp;$100, &nbsp;in &nbsp;$20 more than &nbsp;$80.

It is clear that the difference is due to presence of &nbsp;$0.75 &nbsp;bars that we intently counted as &nbsp;$1. 

It is also clear that the number of these &nbsp;$0.75 &nbsp;bars is &nbsp;{{{20/(1.00-0.75)}}} = {{{20/0.25}}} = 80.


Thus it gives the answer.


For more problems that are solved using this approach see the lessons 

&nbsp;&nbsp;&nbsp;&nbsp;<A HREF=http://www.algebra.com/algebra/homework/word/misc/Problem-on-animals-at-a-farm.lesson>Problem on animals at a farm</A> &nbsp;&nbsp;&nbsp;&nbsp;and 
&nbsp;&nbsp;&nbsp;&nbsp;<A HREF=http://www.algebra.com/algebra/homework/word/misc/Problem-on-tablets-in-containers.lesson>Problem on pills in containers</A>
under the current topic &nbsp;<B>Miscellaneous Word Problems</B>&nbsp; of the section &nbsp;<B>Word problems</B> &nbsp;in this site.