Question 1139506
.


This problem is designed and intended for 6th - 7th grade students who, as a rule, are not familiar yet with systems of linear equations.


This problem is intended and is expected to be solved by reduction to one single equation in one unknown.


Do it as the tutor @greenestamps solved it for you under this link


<A HREF=https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1139505.html>https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1139505.html</A>


https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1139505.html



Although it is possible to solve the problem by using system of 3 equations in 3 unknowns, but it is absolutely unjustified complication.



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


To see many other similar solved problems, look into the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/equations/Advanced-word-problems-to-solve-by-reduction-to-single-linear-equation.lesson>Advanced word problems to solve using a single linear equation</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/equations/HOW-TO-algebreze-and-solve-these-problems-using-one-eqn-in-one-unknown.lesson>HOW TO algebreze and solve these problems using one equation in one unknown</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/equations/Challenging-word-problems-to-solve-using-a-single-linear-equation.lesson>Challenging word problems to solve using a single linear equation</A> 

in this site, and learn the subject from there.


===============


Also, you posted this problem at least 3 times to the forum, starting every time with this mantra


<pre>
    I think this is a system of equations question.
</pre>


Please keep in mind the following.


<pre>
    You EITHER can solve it on your own, OR not.


    You EITHER know how to do it, OR not.


    Since you post the problem to the forum, it means that you CAN NOT solve it on your own and DON't KNOW how to do it.


    Therefore, you better do not hypothesize on how to solve it.


    We, the tutors, are the experts, and we know how to do it.


    So, please, either change your introductory mantra, or do not use it at all.



    By the way, the best mantra to start with is THIS : "<U>Please help me solve this problem.</U>"
</pre>