# Hectares

The tractor plows on the first day of 4.5 ha, the second day of 6.3 ha, and the third day of 5.4 ha. It worked whole hours a day, and its hourly performance did not change and was the highest possible. How many hectares did it plow in one hour (what is its performance)?

## Correct answer:

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

**algebra**- prime numbers
- least common multiple (LCM)
- greatest common divisor (GCD)
**basic functions**- reason
**numbers**- natural numbers

### Units of physical quantities:

### Grade of the word problem:

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