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

time for another six runners was 11.5 seconds. Calculate the mean time for
all the nine runners

User Janeris
by
5.9k points

1 Answer

7 votes

Answer:

11.8

Explanation:

3(12.4) + 6(11.5) = 37.2 + 69 = 106.2

106.2/9 = 11.8

User Jeff Levine
by
6.3k points
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