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In a cave, a stalactite gets 4 millimeters longer each year. This year is 72 centimeter long. How many years until it is 1 meter long?

User Henon
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2 Answers

8 votes
99% sure that it is 70 years
User Andrew Roth
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4.3k points
10 votes

Answer:

70 years

Explanation:

28 cm more to reach 1 meter (100 cm)

28 cm / 4 mm/year =

280 mm / 4mm/year = 70 years

User Bombardier
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4.2k points