Question 1065304
x, how many three-point questions
y, how many five-point questions


{{{system(x=y+12,3x+5y=100)}}}


Simply substitute for x into the total-points equation.
{{{3(y+12)+5y=100}}}
{{{3y+36+5y=100}}}
{{{8y=64}}}
{{{highlight_green(y=8)}}},....