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Total mass = 20 kg =20000g
Mass of 12 cakes = 400 x 12
=4800 g
Mass of 18 cakes = 20000- 4800
=15200 g
Mean of 18 cakes = 15200/18
=844.44 g
joseph rimiru answered the question on October 16, 2017 at 18:56
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