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10 - 3 : 7 2 Rebultant 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 5 h 2. 2 4) 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 th@n the speod ol the current is: (a) 1 km/h (b) 2 km/h (c) 4 km/h (d) 3 km/h JO 10- 6 2 2

15. Q.: A person can row 7.5 km/h in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the current is: (a) 2 km/h (b) 3 km/h (c) 2.5 km/h (d) 3.5 km/h DownptreamUpt ream 2 Speed (x:v)> 2 ILI (C)Aws

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 Spudx:)

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

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 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 2xY XtY 2x7x3 4.2 km/h Ans Average Speed 7+3

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 2hin Di IOhTA 10-2 ghin Down UP u:V-14+1):(4-1)/2 :3

(1) Q : Ahoat coven 2u Krn upat e9m and 36 km down- in 6 houm, while covers 36 Krn upstream and 24 Km downstream m 6 houm.Theapuercumenth. (1 6 2 G 10 U = 2= 10 Km/4

(2) O: A ^wimmer ^ 'ma from a point A'agamat a current aaainnt a cument fox 5 mimutar and lhenAwim backward in favo hc cuarent for me t 5 minutes and comen to lhe point's Smin_ 3 60 60 0 6

(3)0: A boat goen 12 km uptseam and come) hack to lhetaring Point iw 3 hou I p Ecunrunt is 3 m/h, Ihe (a) 12 C)9C) 3 () 6 C3) P down /2 u-3 2 G4 (u3 (u+3) (a) 12 2. - (d) 6 X

(410. The peed et lh current n 5 km/h. Amo tenhoat goes to Km upptream and back again to Ihe starting point in 50 minulen . The peed (in km/h) INE moto in/ tiu Watan (a) 20 C)26 )2S ) 28 (u) P d 0 10-5% 2px 30-24, (4) 28 .