Doubt - Week 8 (numpy) Case Study : Question 8

Hello everyone,
I did not fully understand what is expected in Question 8 of the Numpy Case Study.
Question : How many more runs does Sachin score on average after having scored ‘x’ runs
Sir said that if Sachin has scored 0 runs and his average is 40, then he is expected to score 40 more runs at that time.
And for example if he has scored 5 runs already in the innings, how much more is expected to be scored by him?
Is it about subtracting the ‘x’ score from the mean? I’m having confusion. Pl clarify.
Thank You!

Hi @Ruturaj_Kotwal,
Please refer this thread