Will give and 50 points! Please be original and do it in less then 10 minutes please and ty!

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

15/16 as a decimal rounded to the nearest hundredth

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?