Question 973779
If all 42 were adults, the revenue would be 42*16 = $672
The actual revenue is $568, a difference of $104.
The difference in the fee for adults and children is 16-12, or 4.
104 divided by 4 = 26
Therefore, there are 26 children @ $12 ($312) and 42-26, or 16 adults @ $16 ($256).  $256+312 = $568