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N76 [4]
4 years ago
5

PLEASE ANSWER 20 POINTS + BRAINLIEST

Mathematics
1 answer:
KIM [24]4 years ago
7 0

Answer:

t =  54.85714 seconds

Step-by-step explanation:

t = 12(210)+9000/210

t = (2520 + 9000) / 210

t = 11520 / 210

t =  54.85714 seconds

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