# Tractor wheels

The tractor's front wheel has a circumference of 18 dm and the rear 60 dm. We will make a red mark on the lowest point of both wheels. The tractor then starts. At what distance from the start will both marks appear identically at the bottom again?

## Correct answer:

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#### You need to know the following knowledge to solve this word math problem:

**algebra**- prime numbers
- divisibility
- least common multiple (LCM)
**planimetrics**- circle
- perimeter
**numbers**- natural numbers

#### Units of physical quantities:

#### Grade of the word problem:

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