Question 1065071
Let {{{ p }}} = the price of 1 liter of cooking oil
{{{ 7.5p = 5.5p + 10 }}}
Multiply both sides by {{{ 2 }}}
{{{ 15p = 11p + 20 }}}
{{{ 4p = 20 }}}
{{{ p = 5 }}}
One liter costs $5.00
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check:
{{{ 7.5*5 = 5.5*5 + 10 }}}
{{{ 37.5 = 27.5 + 10 }}}
{{{ 37.5 = 37.5 }}}
OK