Someone answer and EXPLAIN ill mark brainliest!!!!!!!!!!!!!

Answer:
to be fair, this one is tough :D
Step-by-step explanation:
So, we need to figure out what 56 * 8.50 is , it's 476, now subtract that from the total sales. 3136-476=2660 ... the 2660 is the amount of sales when the adults and the kids were at the same amount.... sooo use a common variable like X.... and add up the ticket prices of 10.50+8.50 so that you have an eqution of
x*19.00=2660.00
x=140 people
nice we have the Adults and kids ... each of 140
now just add 140+56=196 kids went to the movies
196 kids