It would cost $769.50 for 162 students because if you take 20 divided by 20 to get one student then you have to divide the money by 20 so you would get $4.75 per student. Then you have to take 4.75 times 162 because that is how many students they would pay for. So your answer would be $769.50 for 162 students to go to the aquarium
