JSCE Mathematics 2022 Objective — Question 76
Question 76 of 80 from the Junior Secondary Certificate Examination (JSCE) Mathematics 2022 Objective paper, with the correct answer and a full explanation.
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The mean age of five students whose ages are 8, x, 13, 12 and 10 is 10. Calculate the value of x in years.
- A. 6 years
- B. 7 yearsCorrect
- C. 8 years
- D. 10 years
Explanation
(8 + x + 13 + 12 + 10)/5 = 10, so 43 + x = 50 and x = 7.
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