6 dispensers within 35 minutes can be shown in a rate of change:
[tex] \frac{6}{35} [/tex]
This shows 6 dispensers per 35 minutes.
To find how many minutes it takes for one dispenser, we can divide the numerator and denominator by 6 in order to find the rate of change per one dispenser. The numerator is simplified to one, while the denominator is 35/6.
35/6≈5.8. This means that 1 dispenser takes 5.8 minutes to clean.