Mathematics · Aptitude Calculations
The rainfall on five successive days was measured as 100 mm, 80 mm, 60 mm, 40 mm, and 20 mm respectively. If the infiltration index (φ-index) for the catchment area is estimated as 50 mm/day, the total surface runoff will be:
- 1140 mm
- 290 mm✓
- 360 mm
- 450 mm
Correct answer
90 mm
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