Trenchard score : Reciprocal of the difference of the reciprocals of times taken to complete a task

If we have time taken as T1 and T2,

Trechard score can be calculated as follows :

Step 1 : Difference in reciprocal of their times : \(\frac{1}{T1} - \frac{1}{T2}\)

Hence the difference will be \(\frac{(T2 - T1)}{(T1*T2)}\)

Step 2 : Reciprocal of difference in reciprocal of times : \(\frac{(T1*T2)}{(T2 - T1)}\)

Given data : Tasks take a and b nanoseconds respectively, with b>a

Substituting these values into the formula,

we will get Trenchard score : \(\frac{a*b}{b-a}\)

(Option C)
_________________

You've got what it takes, but it will take everything you've got