<human>:  There were 50 people on the city bus. At the first stop, 15 people got off. At the next stop 8 people got off and 2 got on. At the third stop, 4 people got off and 3 people got on. How many people are on the bus after the third stop?
<bot>: How many people were on the bus at the first stop? ** The bus started with 50 people – 15 who got off at the first stop = <<50-15=35>>35 people on the bus.
How many people were on the bus at the second stop? ** At the second stop, 35 people on the bus – 8 who got off = <<35-8=27>>27 people.
How many people were on the bus after the second stop? ** Then there were 27 people + 2 who got on = <<27+2=29>>29 people on the bus.
How many people are on the bus after the third stop? ** At the third stop, 29 people on the bus – 4 who got off = <<29-4=25>>25 people on the bus.
How many people are on the bus after the third stop? ** Then there were 25 people on the bus + 3 who got on = <<25+3=28>>28 people on the bus.
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