Question 288461
let the number of adults be x

students will be x+120

5x+3.5(x+120)=2162.5

5x+3.5x+420=2162.5

8.5x=2162.50-420

8.5x=1742.50

x=1742.50/8.5

=205 adults

120+205 =325 srudents attended