jasminesykes2007 jasminesykes2007

30-09-2022
Mathematics

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4 red bricks have a mean weight of 5 kg.
5 blue bricks have a mean weight of 9 kg.
1 green brick has a weight of 6 kg.

Donna says,

“The mean weight of the 10 bricks is less than 7 kg.”

Donna is incorrect. Calculate the mean weight of the bricks.

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