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AfilCa [17]
2 years ago
9

A machine that drills holes for wells drilled to a depth of

Mathematics
1 answer:
s2008m [1.1K]2 years ago
5 0

Answer:

depth of -117 feet

Step-by-step explanation:

24 hours 72 feet, so one hour 72/24 = 3 feet

after 15 hours, another 3*15 = 45 feet, so the depth become 72 + 45 = 117 feet

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