Amill processes 27 tons of flour in 3 hours. do these quantities (amount of flour processed and time) vary directly or inversely?

These quantities varies directly.

Step-by-step explanation:

Given the statement:

A mill processes 27 tons of flour in 3 hours.

If two quantities y and x have a nonzero, constant ratio k then they are said to be direct variation.

The amount of flour processed is directly proportional to  time.

Also,

Number of tons of flour per hour =

Therefore, these quantities vary directly with a constant ratio of 9.