JAMB Mathematics 2019 Objective — Question 24

Question 24 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2019 Objective paper, with the correct answer and a full explanation.

If the mean of five consecutive integers is 30, find the largest of the numbers

A. 30
B. 28
C. 34
D. 32Correct

Explanation

Let the integers be x, x+1, x+2, x+3, x+4. Mean: (5x+10)/5=30 ⇒ 5x+10=150 ⇒ x=28. Largest = x+4 = 32.

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