2617Civil EngineeringMedium
The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be________?
A60 mm
B50 mm
C90 mm
D140 mm
Correct answer
C. 90 mm
Explanation
The correct answer is 90 mm.