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A teacher has decided to take her fifth grade class to a play. The manager of the theater agreed to discount the regular ​$35 price of the ticket by ​$0.30 for each ticket sold. The cost of the​ bus, ​$480​, will be split equally among each of the students. How many students must attend to keep the cost per student at or below ​$35​?

User SofDroid
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Answer:

40 students

Step-by-step explanation:

The cost of the bus is $480

For x students, the cost of each ticket will be 35 - 0.30x

The total cost of the tickets for x students will be x(35 - 0.30x)

To find the number of students that will make the cost per student equal to $33, we solve for x:

480+ x(35 - 0.30x) =35

x

480+ x(35 - 0.30x) = 35x

480 + 35x - 0.30x² = 35x

480 = 0.30x²

1,600 = x²

40 = x

The cost per student will be $35 if the number of students is 40; it will be less than $35 if the number of students is greater than 40.

User Alexbw
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