Answer: 4,720.
Step-by-step explanation: We're given 90% and 4,248 We know that 90% of the students enrolled use the bus for transportation. We know the 10% of the students who don't ride buses can't be more than 500, because 10% is so small. 90% of 4,720 students are 4,248, which means in total, 4,720 students are enrolled in the big city school.
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