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What is the weight of the third rock?

What is the weight of the third rock?-example-1
User Persijn
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2 Answers

4 votes
D= 16.76 because:

First: 3.63
Second: 3.63+1.12=4.75
Third: (4.75+3.63)*2=16.76
User Otmezger
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1 vote
the answer is c. 9.5
User Josh J
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