GATE Civil Engineering (CE) 2022 Shift 1 Solved Paper

A water treatment plant has a sedimentation basin of depth 3 m, width 5 m, and length 40 m. The water inflow rate is 500 m³/h. The removal fraction of particles having a settling velocity of 1.0 m/h is_______. (round off to one decimal place)
(Consider the particle density as 2650 kg/m³ and liquid density as 991 kg/m³)