The average score of statistical mathematics test in a class is 87.26. When marking the paper, I found that Li Wei's score of 98 was wrongly recorded as 89. After recalculation, the class average score is 87.44. How many students are there in the class?
98-89=9 (point)
9÷(87.44-87.26)
=9÷0. 18
=50 (person)
hope this helps
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