a) 16 hours b) 18 hours c) 20 hours d) 24 hours Answer: d Explanation: Speed upstream = 7.5 kmph Speed ...
View QuestionA man can row three-quarters of a kilometer against the stream in 11(1/4) minutes and down the stream in 7(1/2) minutes. The speed (in km/hr) of the man in still water is:
A man can row three-quarters of a kilometer against the stream in $$11\frac{1}{4}$$ minutes and down the stream ...
View QuestionA boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
a) 40 minutes b) 1 hour c) 1 hr 15 min d) 1 hr 30 min Answer: c ...
View QuestionIn one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
a) 3 kmph b) 5 kmph c) 8 kmph d) 9 kmphr Answer: c Explanation: Speed ...
View QuestionA motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:
a) 4 km/hr b) 5 km/hr c) 6 km/hr d) 10 km/hr Answer: b Explanation: Let the speed of ...
View QuestionA boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?
a) 2 : 1 b) 3 : 2 c) 8 : 3 d) None of these Answer: c Explanation: ...
View QuestionThe ages of Shakti and Kanti are in the ratio of 8 : 7 respectively. After 10 years, the ratio of their ages will be 13 : 12. What is the difference between their ages ?
a) 8.5 km/hr b) 9 km/hr c) 10 km/hr d) 12.5 km/hr Answer: c Explanation: Man's ...
View QuestionA boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
a) 2 hours b) 3 hours c) 4 hours d) 5 hours Answer: c Explanation: Speed ...
View QuestionA boat takes half time in moving a certain distance downstream than upstream. The ratio of the speed of the boat in still water and that of the current is?
a) 2 : 1 b) 4 : 3 c) 1 : 2 d) 3 : 1 Answer: d Explanation: ...
View QuestionA boat moves downstream at the rate of 1 km in 7(1/2) minutes and upstream at the rate of 5 km an hour. What is the speed of the boat in the still water?
A boat moves downstream at the rate of 1 km in $${\text{7}}\frac{1}{2}$$ minutes and upstream at the rate ...
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