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BECE Mathematics 2017 Paper

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Question : 9

Total: 40

The ages of the members of a social club are 20 years, 55 years, 60 years and 25 years. Find the mean age of the members of the club.

20 years
30 years
40 years
50 years

Solution:

Concept:

Mean age is the sum of all ages divided by the total number of members.

Explanation:

Sum of all ages

= 20 + 55 + 60 + 25 = 160

years.

Number of members

= 4

.

Mean

= \frac{\text{Sum of ages}}{\text{Number of members}} = \frac{160}{4} = 40

years.

Answer:

The mean age of the members is

40

years.

Correct option: C.

40

years.

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