On a river , Q is the mid  point between two points P and R on the same bank of the river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 minutes. How long would it take to go from R to P?
\({ \text{3}}\frac{3}{7}\) hr
5 hr
\({ \text{6}}\frac{2}{3}\) hr
\({ \text{7}}\frac{1}{3}\) hr
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#  Quiz 

1
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A man takes 2.2 times as long to row a distance upstream as to row the same distance downstream. If he can row 55 km downstream in 2 hour 30 minutes, what is the speed of the boat in the still water?
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2
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A 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.
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3
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A boat covers a certain distance downstream in 1 hour, while it comes back in \(1\frac{1}{2}\) hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water?
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4
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If the speed of a boat in still water is 20km/hr and the speed of the current is 5km, then the time taken by the boat to travel 100 km with the current is?
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5
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The speed of a boat in still water in 15 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 12 minutes is:
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6
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A 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?
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7
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A man can row three quarters of a kilometers against the stream in 11 1/4 minutes and return in 7 1/2 minutes.The speed of the man in still water is
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8
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A 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?
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9
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A man can row upstream at 12km/hr and downstream at 18 km/hr. The man rowing speed in still water is?
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10
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A man row to a place 48 km distant and back on 14 hours text. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is?
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