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katen-ka-za [31]

3 years ago

12

The mean mass of five boys is 10.5 kg. The mean mass of three girls is 9.5 kg. Work out the mean mass of the eight young childre

n young children.

1 answer:

11111nata11111 [884]3 years ago

3 0

Answer:

the mean of 8 children = mean of 5 boys + mean of 3 girls / 2

10.5 + 9.5 / 2

20 / 2

= 10 kg

therefore mean of 8 children is 10 kg

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