## Amar Sir is teaching live on Unacademy Plus

A renowned faculty of Objective Mathematics, Personal Interview/GD General Studies, Indian History An experience of 24 yrs of teaching at Jamshedpur, Ranchi, Bokaro [Jharkhand], Sambalpur [Odisha]. Thousands of successful students in Bank/SSC/Railway/Civil Services unacade 108 1146 156K Courses Lessons Followers Life time views 980K Amar Sir "Math Dikhta Hai" Follow me on Unacademy: https://unacademy.com/user/amar.singh963

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10 -3 : 7 (3) 2 2

17. Q.: A man can row at 5 km/h in still water. If the velocity of current is 1 km/h and it takes him 1 hour to row to a place and come back, then how far is the place? (a) 2.5 km/h (b) 3 km/h(c) 2.4 km/h (d) 3.6 km/h 6 02

17. Q.: A man can row at 5 km/h in still water. If the velocity of current is 1 km/h and it takes him 1 hour to row to a place and come back, then how far is the place? (a) 2.5 km/h (b) 3 km/h(c) 2.4 km/h (d) 3.6 km/h Down Up Sp ee d Tin 2 Dntance nl

18. Q.: The speed of a boat in still water is 6 km/h and the speed of the stream is 1.5 km/h. A man rows to a place at a distance of 22.5 km and comes back to the starting point. The total time taken by him is: (a) 10 hours (b) 4 hours 10 minutes (c) 6 hours 10 minutes (d) 8 hours Down

19. Question: A man can row at a speed of 5 km/hr in still water to a certain upstream point and back to the starting point in a river which flows at 2 km/hr. Find his average speed for total journey. (a) 9 km/hr (b) 4.2 km/hr (c) 8 km/hr (d) 6 km/hr (e)None of these Solution X 5+2-7 km/h, and Y - 5-2-3 km/h Average Speed - 2XT - 2x7x3 - 4.2 km/h Ans

20. Q. A man can row 6 km/hr. in still water. If the river is running at 2 km/hr., it takes 3 hrs more in upstream than to go downstream for the same distance. How far is the place? (a) 24 km (b) 22 km (c) 18 km (d) 26 km (e) None of these 2nd - 2 2 2 nl 3) In 8x3 24 xt=24Km

21. Ques: P, Q and R are the three towns on a river which flows uniformly are equidistant from P and R. I row from P to Q and back in 10 hrs and I can row from P to R in 4 hrs. Compare the speed of my boat in still water with that of the river. (a) 5:3 (b) 4: 3 (c) 6:5 (d) 7:3 (e) None of these IOhTA Down UP

(1) Q : Ahoat covers 2u Km upatrom and 36 down- covers 36 Km upstream stream in 6 hours , wh and 24 Km downstream m 6 houm.TheaPadotcumenth. (a) 1 km/h ( ) 2 km/h (C) I S km/h (d) 2 . S Km/h (2) o: A />wimmer /> w imn from a point 'A,against a current cunent for mext s minuts and comen to Ihe point'g' d) O 6 (a) 12 ()9 CC) d) 6 (M) o: The Pad et lhe curr ent in 5 Km/h. A motenhoat goes 10 Km upteam and back again to lhe ntarting point in 5o (a) 20 CA) 26 CC 2S d28

2 8: A pwimmen swima from a point 'A'agaimst a cunent cuar ent for me t 5 mmutin and comes to lhe point's (a) oy () 0 C) 1d) 0 6 Smin_ 3 down SC - 60 6 0 0 6

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