The frequency distribution of marks obtained by students in an English examination is given below: Below 40 → 50, Below 50 → 125, Below 60 → 210, Below 70 → 315, Below 80 → 350. What is the number of students who scored between 60 and 70 marks?
A.105✓ Correct
B.110
C.205
D.210
Explanation
Number of students scoring between 60 and 70 = (number below 70) − (number below 60) = 315 − 210 = 105.
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