SOLUTION: A school bus transports a group of students. At the first stop, four students get off of the bus and seven others get on. At the second stop, Isabelle and her little sister get off

Question 293821: A school bus transports a group of students. At the first stop, four students get off of the bus and seven others get on. At the second stop, Isabelle and her little sister get off. The remaining twelve students get off at the third and final stop. How many students were on the bus before the first stop?
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
Let x be the number of students on the bus before the first stop.
Now, let's start adding/subtracting with each stop
after the first stop or
after the second stop or
after the third stop oss
You also know that all students are off the bus after the final stop. So

Check your answer

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