Question 1134792
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This problem is posed / formulated  &nbsp;&nbsp;<U>I N C O R R E C T L Y</U>.



&nbsp;&nbsp;&nbsp;&nbsp;- Why ?    - 


Because there is &nbsp;<U>NEITHER</U> &nbsp;logic &nbsp;<U>NOR</U> &nbsp;functional &nbsp;connection between the first sentence 


<pre>
    "A certain concrete mixture contains 6.00% cement and 8.00% sand."
</pre>

and the second &nbsp;(and the last) &nbsp;sentence/question


<pre>
    "how many kilograms of sand should be combined with 255 kg of cement to make aa batch that is 14.0% cement and 16.0% sand? "
</pre>


Simply <U>the person who created and formulated the problem, &nbsp;does not know the subject</U> and <U>does not possess terminology</U>.


Naturally, &nbsp;it means that the solutions of both other tutors make no sense.



All this stuff must be redirected to the &nbsp;<U>GARBAGE &nbsp;BOX</U> &nbsp;immediately.



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Meanwhile, &nbsp;in this site there is a &nbsp;<U>HUGE &nbsp;collection of lessons devoted to mixture problems</U>,


and among these lessons there is one containing &nbsp;<U>VERY &nbsp;SIMILAR samples and templates of solved problems</U>


&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/mixtures/Advanced-mixture-problems.lesson>Advanced mixture problems</A>