Quant Quiz-Boat and Stream

Practice Quant Quiz-Boat and Stream for IBPS Clerk Mains, NIACL, India Post.

                          
1. A swimmer covers a distance of 28 Km against the current and 40 Km in the direction of the current. If in each case he takes 4 hours, then the speed of the current is:
(a) 3.5 Km/h
(b) 1.5 Km/h
(c) 2.5 Km/h
(d) 4.5 Km/h
(e) None of these

2. If a man’s rate with the current is 12 Km/h and the rate of the current is 1 (1/2) Km/h, then his rate against the current is:
(a) 13 Km/h
(b) 7 Km/h
(c) 9 Km/h
(d) 10 Km/h
(e) None of these

3. A boatman can row 2 Km against the stream in 20 minutes and return in 18 minutes. Find the rate of current.
(a) 1/2 Km/h
(b) 2/3 Km/h
(c) 1/3 Km/h
(d) 1/4 Km/h
(e) None of these

4. A boat travels 2 Km upstream in a stream flowing at 3 Km/h and, then returns downstream to the starting point in 30 minutes. The speed of the boat in still water is:
(a) 17 Km/h
(b) 9 Km/h
(c) 13 Km/h
(d) 15 Km/h
(e) None of these

5. Twice the speed downstream is equal to the thrice the speed upstream, the ratio of speed in still water to the speed of the current is:
(a) 1 : 5
(b) 5 : 1
(c) 1 : 3
(d) 2 : 3
(e) None of these

6. A boatman goes 2 Km against the current of the stream in 1 h and goes 1 Km along the current in 10 min. How long will he take to go 5 Km in stationary water?

(a) 1 hour
(b) 1 hour 15 minutes
(c) 1 1/2 hours
(d) 40 minutes
(e) None of these

7. P, Q, R are three towns on a river which flows uniformly. Q is equidistant from P and R. A man rows from P to Q and returns in 10 h. He can row from P to R in 4 h. The ratio of speed of the man in still water to the speed of the current is :
(a) 5 : 3
(b) 3 : 5
(c) 2 : 5
(d) 1 : 2
(e) None of these

8. A man can row 30 Km upstream and 44 Km downstream in 10 hours. Also, he can row 40 Km upstream and 55 Km downstream in 13 hours. Find the rate of the current and the speed of the man in still water.
(a) 3 Km/h, 8 Km/h
(b) 3.5 Km/h, 7.5 Km/h
(c) 4.5 Km/h, 6.5 Km/h
(d) 4.5 Km/h, 6.5 Km/h
(e) None of these

9. A boat takes 6 hours to travel from place M to N downstream and back from N to M upstream. If the speed of the boat in still water is 4 Km/h, what is the distance between the two places?
(a) 8 Km
(b) 12 Km
(c) 6 Km
(d) Date inadequate
(e) None of these

10. A person can swim at 7 (1/2) Km/h in stagnant water. In a river with 1.5 Km/h current, the person swims to a certain distance and comes back within 50 min. What is the distance between the two points?
(a) 3 Km
(b) 4 Km
(c) 1 Km
(d) 2 Km
(e) None of these

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