JAMB Mathematics 2016 Objective — Question 19

Question 19 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2016 Objective paper, with the correct answer and a full explanation.

19. The table above (Mar, 2, 3, 4) shows the frequency distribution of marks obtained by a group of students. If the total mark is 48, find the value of y. A. 6 B. 7 C. 8 D. 5

A. 6
B. 7
C. 8
D. 5Correct

Explanation

Total mark = (2×4)+(3×4)+(4×y) = 8+12+4y = 20+4y. But total mark = 48. Thus, 20+4y=48, 4y=28, y=7.

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