bossefamily1
bossefamily1 bossefamily1
  • 17-04-2019
  • Mathematics
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khaif
khaif khaif
  • 18-04-2019

20-14=6

14 have average of 2.

total mass of the 14=14×2=28lb

remaining 6 have average of 4.

total mass=4×6=24lb

total mass of the 20=28+24=52lb

average of the 20;

52/20=2.6lb

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