What does below rebus means ?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

Which flower has two lips?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

I am quite hot but become too cold if you remove the first two letters. What am I?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?