Bus #7 left River Street School partially filled with students and then stopped to pick up 15 more students at the Park School. it continued on its route as follows: At the next 4 stops it dropped off two students at each stop. Three students got off at the following stop. The next six stops let off one student at each stop. Ten students then got off at the Centerville after-school-program, where five kindergarten students boarded the bus. The bus then dropped off seven kids at its last stop, leaving only the driver aboard. How many students were on the bus when it left the River Street School? Show your work and explain your reasoning.

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ISBN:9780470458365
Author:Erwin Kreyszig
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Bus #7 left River Street School partially filled with students and then stopped to pick up 15 more students at the Park School. it continued on its route as follows:

  • At the next 4 stops it dropped off two students at each stop.
  • Three students got off at the following stop.
  • The next six stops let off one student at each stop.
  • Ten students then got off at the Centerville after-school-program, where five kindergarten students boarded the bus.
  • The bus then dropped off seven kids at its last stop, leaving only the driver aboard.

How many students were on the bus when it left the River Street School? Show your work and explain your reasoning.

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