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In a race the mean time for three runners is 12.4 seconds and the mean time for another six runners was 11.5 seconds. Calculate the mean time for all nine runners.

In a race the mean time for three runners is 12.4 seconds and the mean time for another six runners was 11.5 seconds. Calculate the mean time for all nine runners.
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1 vote
In a race the mean time for three runners is 12.4 seconds and the mean time for another six runners was 11.5 seconds. Calculate the mean time for all nine runners.

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User Faris
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8.2k points

2 Answers

5 votes
The answer would be 23.9 seconds because you add the mean time of the 3 runners and the 6 other runners and get this answer
answered
User Sushmit Patil
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8.8k points
1 vote
I think the answer would be 23.9 because if you 12.4 with 11.5 you would get 23.9.
answered
User Litanhua
by
8.3k points
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