Answer:
a) d = r *t
Explanation:
The equivalent formula for calculating rate is given as:
d = r *t
Where d is the amount of substance, r is the rate and t is the time taken.
The rate of process is the amount or quantity attained per unit of time.
It is usually expressed as;
r = [tex]\frac{d}{t}[/tex]
So, the other variant will be d = r *t
