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BANK PO/CLERK/SSC/RAILWAY Math Dikhta Hai" MATHEMATACS Boat andStrea unacade Amar Sir

SBI PO/IBPS PO/SSC CGL/RAILW MATHEMAT BOATAND STREAM Math Dikhta H i unacade Amar Sir

10 -3 : 7 (3) 2 2

2. Q.: A boat rows 1 km in 5 minutes, along the stream and 6 km in 1 hour against the stream. The speed of the stream is: (a) 3 km/h (b) 6 km/h (c) 10 km/h (d) 12 km/h 3 Kmlh x12 Km/h 2.

3. Q.: The speed of a boat in still water is 10 km/h. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/h) of the stream is: (a) 2.5 (b) 3 (c) 3.5 (d) 4 I5. 2: u-y -10-75 2.5 Km/h(A) =

4. Q.: A man rows 40 km upstream in 8 hours and a distance of 36 km downstream in 6 hours. Then, the speed of stream is: (a) 0.5 km/h (b) 1.5 km/h (c) 1 km/h (d) 3 km/h 4o Km 5 Km/h 2 2. 6km/h ( 0.5Km/h

5. Q.: A boat goes 100 km downstream in 10 hours and 75 km upstream in 15 hours, then the speed of stream is: (a) 2 km/h (b) 2.5 km/h (c) 3 km/h (d) 3.5 km/h lo h 2 2 15 h (b) Am

6. Q.: A boy can swim in still water at a speed of 10 km/h. If the speed of the current would have been 5 km/h, then the boy could swim 60 km: (a) Upstream in 4 hours (b) downstream in 12 hours (b) (c) upstream in 6 hours (d) downstream in 4 hours 12 hn x u 10 Km/h(a) 5%a/h

7. Q.: A person can row 1 km upstream in 10 minutes and downstream in 4 minutes. What is the speed of stream? (a) 4.5 km/h (b) 4 km/h (c) 9 km/h (d) 5.6 km/h 1omin1 km 60 min- 2 : 6Km 2 2. 2 (a) Am 60 min 2:15Km

8. Q.: A boat goes 20 km downstream in 1 hour and the same distance upstream in 2 hours. The speed of the boat in stll water is: (a) 15 km/h (b) 10 km/h (c) 5 km/h (d) 7.5 km/h =20Km 20 Km 2 h /h y:20Km/h 10 km - 2 2 2 (a) Ans

9. Q A sailor goes 12 km downstream in 48 minutes and returns in 1 hour 20 minutes. The speed of the sailor in still water is: (a) 12 km/h (b) 12.5 km/h (c) 13 km/h (d) 15 km/h 2 2 3 3 (a) Aw

11. Q.: A man rows to a place 35 km in distance and back in 10 hours 30 minutes. He found that he could row 5 km with the stream in the same time as he can row 4 km against the stream. Find the rate of flow of the stream. (a) 1 km/h (b) 0.5 km/h (c) 0.75 km/h (d) 1.5 km/h 2 2 35, 35-21 "gK 2 2 2

14. Q.: A man can row 30 km downstream and return in a total of 8 hours. If the speed of the boat in still water is 4 times the speed of the current, then the speed of the current is: (a) 1 km/h (b) 2 km/h (c) 4 km/h (d) 3 km/h Ti me (Dun: up) - 3:s ) 30 Km (4) .

16. Q.: A motor boat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 hours and a half. If the speed of water is 1.5 km/h, then the speed of the boat in still water is: (a) 17 km/h (b) 19.5 km/h (c) 17.5 km/h (d) 19 km/h Downniream: Upntream 3Shx 7 6 6 Spudlx:y) il

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

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

BANK PO/CLERK/SSC MATHEMATACS Boat andStrea unacade

(1) Q . Ahoat coven 2u Krn wpat e9m and 36 krn down. trea m m 6 hows, wh it covers 36 Krn upstream and 24 em down:tream m 6 hown Theapud cument . (1) 3 +24-6 09 % 24 (A)

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

(3) 0 A boat goen 12 km uptream and comr hack toamg point in 3 hours. If Perd INE cunrunt. 3 Km/h, INE (a) 12 C)9C) 3 () 6 UP down 2 4 (ue3) (u+3) (u3)(u+3 2. (a) 12 3X3 (4) gue,Ange - (d) 6 X

(410 . The Pad et lhe current n 5 km/h. Arno tenhoat goes 10 Km upntream and back again to lhe ntarting poit im 5o (a) 20 C.) 26 (C) 25 )28 (u) P d l O 10-5% L- e-SuS) 6 (u(ut) 2 2 6 (4) 28 33x.