Question 1150392
{{{90(15-h)+95h=92*15}}}


{{{90*15-90h+95h=92*15}}}

{{{(95-90)h+90*15=92*15}}}

{{{(95-90)h=92*15-90*15}}}

{{{h=15((92-90)/(95-90))}}}

you can finish the computation.