Question 196226
Let {{{g}}}= the amount he gained
Then {{{2g}}} will be the amount he lost
given:
{{{10000 + g - 2g = 8000}}}
{{{10000 - g = 8000}}}
{{{-g = - 2000}}}
{{{g = 2000}}}
{{{2g = 4000}}}
He gained $2,000 and lost $4,000
check:
{{{10000 + 2000 - 4000 = 8000}}}
{{{12000 - 4000 = 8000}}}
{{{8000 = 8000}}}
OK - I think your daughter was right