Question 1122442
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<pre>
From the condition, you have these two equations in 2 unknowns


{{{(1/5)x}}} + {{{(1/3)y}}} = 350.      (1)

{{{(4/5)x}}} + {{{y}}} = 1200.        (2)


Multiply eq(1) by 4 (both sides).  Keep equation (2) as is.  You will get


{{{(4/5)x}}} + {{{(4/3)y}}} = 1400.     (1')

{{{(4/5)x}}} + {{{y}}} = 1200.        (2')


Now subtract eq(2') from eq(1'). You will get


         {{{(1/3)y}}} = 200,


which implies  y = 600.  


Then from (2)   {{{4/5)x}}} = 1200 - 600 = 600;  hence.  x = {{{(600*5)/4}}} = 750.


<U>Answer</U>.  Tanker X volume is  750 mL.  Tanker y volume is  600 mL.  
</pre>

Solved.


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I used the &nbsp;<U>Elimination</U>&nbsp; method to solve the system of equations.


So, &nbsp;on the way you learned on how the &nbsp;Elimination method works.