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maksim [4K]
3 years ago
14

Average = 55 seconds

Mathematics
1 answer:
mezya [45]3 years ago
7 0
(54.3+56.1+n)/3 = 55
54.3+56.1+n = 165
54.6 = n
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3 years ago
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Answer:

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Hi there!

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3 years ago
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