Question 137205
Saturday she used 2/5th. So how much was left for Sunday?
{{{1 - (2/5)}}} = {{{3/5}}}

Sunday she used 3/4 of what was left. That will leave her with 1/4 of what she started Sunday .

{{{(1/4) * (3/5) }}} = {{{3/20}}} of a tank is left for Monday. Dad won;t be happy