From the given table, what is the percentage of students scoring 40 or more. but less than 70.
Total number of students scoring 40 or more but less than 70 = 31 + 38 + 46 = 115
Total number of students = 12Â + 19 + 22 +Â 31 + 38 + 46 + 50 = 218
Percentage of students scoring 40 or more but less than 70 = $$\frac{115}{218} \times 100 = 52.75
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