If an object traveled 4 cm a year, how many years would it take of it to travel 1 kilometer ?

Question

If an object traveled 4 cm a year, how many years would it take of it to travel 1 kilometer ?

Answer 1

1 centimeter = 1.0 × 10-5 kilometers or 100,000cm in 1 km

25,000 years is the answer

Okay, so if its going 4cm a year times that by 25,000 years would equal 100,000cm or 1km. Working backwards of course.

Answer 2

1 km = 1000 m = 100,000 cm

divide by 4 cm/y

result is 25,000 years