Answer:
180 adults and 105 kids
Explanation:
x + y =285
1.25x + 6.00y = 1140
1.25(285-y)+ 6.00y = 1140
356.25 - 1.25y + 6.00y = 1140
subtract the cost from amount of people and subtract the costs
4.75y = 855 then divide
y= 180 (adults)
180 from 285
x=105