Question 1073836
Let {{{ x }}} = number of gallons it can hold
Starts with {{{ (1/3)*x }}} gallons
{{{ (1/3)*x + 9 = (5/6)*x }}}
Multiply both sides by {{{ 6 }}}
{{{ 2x + 54 = 5x }}}
{{{ 3x = 54 }}}
{{{ x = 18 }}}
It can hold 18 gallons
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check:
{{{ (1/3)*x + 9 = (5/6)*x }}}
{{{ (1/3)*18 + 9 = (5/6)*18 }}}
{{{ 6 + 9 = 15 }}}
{{{ 15 = 15 }}}
OK