Question
At the bus interchange, some passengers boarded the bus. At the fourth stop, 13 passengers alighted and 3 passengers boarded the bus. At the fifth stop, only 37 passengers boarded the bus. When the bus left the fifth stop, there were 60 passengers on the bus. How many passengers boarded the bus at the interchange?
3 m

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At the bus interchange, some passengers boarded the bus. At the fourth stop, 13 passengers alighted and 3 passengers boarded the bus. At the fifth stop, only 37 passengers boarded the bus. When the bus left the fifth stop, there were 60 passengers on the bus. How many passengers boarded the bus at the interchange?