Mr. Carter and Ms. Torres needs two busses to drive their classes to the amusement park. Each class needs money to rent a bus and $20 to tip the driver. The two classes together raised $240. How much money can they spend on each bus rental.

A. 2b+20=240

B. 2b-40=240

C. 2(b+20)=240

D. B+20=240

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Plz help now