Question #f3b4f

1 Answer
Binayaka C.
Jun 30, 2017

Overall mean weight of all three teams is # 148 .69 # lbs

Explanation:

Total weight of team A with #15# members is #w_A= 15*140 = 2100 # lbs
Total weight of team B with #7# members is #w_B= 7*135 = 945 #
lbs
Total weight of team C with #20# members is #w_C= 20*160 = 3200 # lbs

Overall #(15+7+20)=42 # members weigh # (2100+945+3200)=6245# lbs.

Overall mean weight of all three teams is #6245/42 ~~ 148 .69 (2dp) # lbs

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