SBI PO Prelims 6 Nov 2023 Shift 1 Paper

A ship takes 15 hours for travelling D km downstream and (D + 15) km upstream. If the ship takes 13 hours for covering (D – 15) km downstream and (D + 10) km upstream and the speed of stream is 5 km/hr then, find time taken by the ship to cover (D + 60) km in downstream?