Question

Determine the percent change in optimum recommended fluoride concentration for a water system with annual average maximum daily temperatures of 10.0 to 12.0 Celsius. The percent change is given by:

a) ( fracF_12 - F_10/F_10 × 100 )
b) ( fracF_10 - F_12/F_12 × 100 )
c) ( fracF_12 + F_10/2 × 100 )
d) ( fracF_12/F_10 × 100 )

Answer 1

The percent change in optimum recommended fluoride concentration for a water system can be calculated using the formula (F12 - F10) / F10 x 100%.

Step-by-step explanation:

The percent change in optimum recommended fluoride concentration for a water system with annual average maximum daily temperatures of 10.0 to 12.0 Celsius can be calculated using the formula:

(F12 - F10) / F10 x 100%

where F12 is the fluoride concentration at 12.0 Celsius and F10 is the fluoride concentration at 10.0 Celsius. This formula compares the change in concentration to the initial concentration and expresses it as a percentage.