# If #6# tractors take #6# days to collect the harvest, then how many days will it take #18# tractors to collect the harvest?

##### 2 Answers

Jun 3, 2018

2 days

#### Explanation:

Assuming they work at the same rate and are in direct proportion:

Where

Now multiply

Jun 3, 2018

#### Explanation:

This is an example of inverse proportion.

Where there are two quantities and one increases, the other will decrease. As there is a task to be completed (the harvesting), the MORE tractors that are doing the work, the LESS time it will take to do the job.

For

If there are