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Solving math problems in the fifth grade of primary school? Explain the train of thought and solve it in the fifth grade.
There are two buses, so the third year minus the second year is the same.

1 bus+1 bus =650-525= 125 people;

Number of passengers = 340 ÷ 2-125 =170-125 = 45;

1 bus =(525-340)- 125=60 people,

Number of bus seats = 125-60=65 people.