Question 183823
There is a total of 130 students going to the prom
if x represents seniors, then 130-x would represent juniors
Seniors pay $60 and Juniors pay $80 totalling $8800 so
{{{60x + 80(130-x)=8800}}}
{{{60x+10400-80x=8800}}}
{{{-20x+10400=8800}}}
Subtract 10400 from both sides
{{{-20x=-1600}}}
Divide both sides by -20
{{{x=80}}}
So 80 Seniors attended the prom and
130-x=130-80=50 Juniors Attended

Check:
$60(80)+$80(50)=$4800+$4000=$8800 Which is the total collected