Question

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?

Answer 1

99% sure that it is 70 years

Answer 2

70 years

Explanation:

28 cm more to reach 1 meter (100 cm)

28 cm / 4 mm/year =

280 mm / 4mm/year = 70 years