The Parent Teacher Organization has raised $1800 to help pay for a year-end trip to an amusement park. They ask that there be one adult for every five students attending. Adult tickets cost $45 and student tickets cost $30. If the group wants to take 50 students, how much will each student need to pay so that adults agreeing to chaperone pay nothing?

For 50 students, the group needs 10 adults because there is one adult for every five students. The tickets cost $1,500 for students (50 × $30) and $450 for adults (10 × $45), for a total of $1,950. After the PTO’s $1,800 contribution, $150 remains; divided among 50 students, that is $3 each. So the correct choice is $3.

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