Boot and Stream WELCOME TO UNACADEMY By kunal swarnkar

About me o Kunal swarnkar . Bachelor's of engineering Mechanical engineering o Rate, review and recommend o Follow me on https://unacademy.com/user/kunalswarn42-7542

Boat and Stream 82 Let speed of Boat-X kmph (in still water) speed of stream/current/flow ves km,, KM Y kmph goaf "-x krna, upske m kmph #upstream-(X-Y) kmph against the flow #downstream-(X+Y) kmph with the flow 6, Upwasd s

Q. The spced of a boat in still water is 15 km/hr and the rate of flow is 3 km/hr. The distance traveiled downstream in 12 minutes is Solution:- 15 km/h D24 km

Q. A man rows upstream 13km and downstream 28 km taking 5hours each time. The speed of the current is Solution: 5

Q. A boat moves downstream at the rate of 1 km in 6 minutes and upstream at the rate of 1 km in 10 minutes. The speed of the current is Solution: xt y- lem in 6min 10km 60 min

Q. The speed of a boat in still water is 10 km/hr. If it can travel downstream 2O km in the same time as it can travel 12 km upstream, then what is the speed of the current? Solution: limu Samne 12

Q. A boatman can row his boat at the rate of 4 km/hr. He takes 16 hrs going down a river for 30 km and coming back. The speed of the stream is Solution: l6 2 3o 16= 30

Practice question A Men can row down the stream at 3 km/hr and he finds that it takes him twice the time to row up the stream. The speed of the stream is Some Formula: Dds S,+S, Time taken to row downstream Time taken to row upstreams Dus Sb-S Sds Sus 2 Sds Sus Speed of the baat, Sb.as-as -a-%s speed of the boat, Sb 2

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Kunal swarnkar

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