Question 1027181
Call the tank capacity, T gallons.


{{{(1/4)T+10=(2/3)T}}}




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After you think about that equation and understand, then solve for T.


{{{10=(2/3)T-(1/4)T}}}
{{{10=(2/3-1/4)T}}}
{{{T(8/12-3/12)=10}}}
{{{T(5/12)=10}}}
{{{T/12=2}}}
{{{T=24}}}