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1. The average weight of 47 balls is 4 g. if the weight of the bag (in which the balls are kept) be included; the calculated average weight per ball increases by 0.3 g. What is the weight of the bag?
= 0.3 × 47
= 14.1 g
Solution:
Total increased weight= 0.3 × 47
= 14.1 g