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Eight numbers have a mean of 35. Three of them have a mean of 28 and another three have a mean of 40. What is the mean of the remaining two?

Competition practiceStatistics

A38
B35
C76
D36

Step-by-Step Solution

Total

= 8 \times 35 = 280

. The six known numbers add to

3 \times 28 + 3 \times 40 = 204

. Remaining two:

280 - 204 = 76

; their mean

= 38

. (76 is their sum.)

Answer: A) 38

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