(Answered) Calculate the density of a rock composed of the four

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Calculate the density of a rock composed of the four minerals listed below together with their abundances and densities.

Mineral	Abundance by volume, %	Density g/cm³
Olivine	15	3.30
Augite	50	3.20
Plagioclase	25	2.68
Magnetite	10	5.18

Hint: The total mass of the rock is the sum of the masses of its minerals

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