Kevin got 12 answers wrong on his test and got a 85%. how many questions was on the test

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?