What is the relationship between reaction rate and reaction time

The reaction rate is inversely proportional to the reaction time.

Explanation:

The reaction rate is the change of the concentration of reactants and products with the time.

∵ Reaction rate = - Δ[reactants]/Δt = Δ[products]/Δt.

∴ The reaction rate is inversely proportional to the time, as the reaction rate increases it will take a lower time.