There is 10 rings in a gift box. The average weight of the ﬁrst 4 ri – McqOptions

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1.	There is 10 rings in a gift box. The average weight of the ﬁrst 4 rings is 39 grams and the remaining 6 rings have an average weight of 40 grams. Get the average weight of the total rings.
A.	39.4
B.	39.2
C.	39.6
D.	39.8
Answer» D. 39.8

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