Question 1153176
.
<pre>

{{{3/4}}}  of the tank volume minus  {{{1/8}}}  of the tank volume is  


    {{{3/4}}} - {{{1/8}}} = {{{6/8-1/8}}} = {{{5/8}}}  of the tank volume.


For  {{{5/8}}}  of the tank volume he payed 50 dollars, i.e. 10 dollars for each {{{1/8}}} of the tank volume.


Since he filled, finally,  {{{7/8}}}  of the tank volume, he payed 10*7 = 70 dollars, in all, at the gas station.   <U>ANSWER</U>
</pre>

Solved.


---------------


Notice that in my solution, &nbsp;the given data of &nbsp;25 &nbsp;liters is &nbsp;EXCESSIVE.


I solved the problem and got the answer without using this number.


So, &nbsp;it is &nbsp;UNNECASSARY &nbsp;in this problem (!)