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A son and father goes for boating in river upstream . After
rowing for 1 mile son notices the hat of his father falling
in the river. After 5 min. he tells his father that his hat
has fallen. So they turn around and are able to pick the
hat at the point from where they began boating after 5 min.
Find out the speed of river.
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Answer / gaurav sharma
6 miles per hour.......
actually hat fell when they were 1 mile away from starting
and total time hat takes to travel to the starting point is
10 minutes ( 5 + 5 ).so, 1 miles per 10 minutes thats why 6
miles per hour
| Is This Answer Correct ? | 144 Yes | 14 No |
Answer / abhilasha
Cap fell here
A-------------->B----------------->C Upstream-------->
1mile
-----5 min--------
A<-----<<-------B<--------<<------C <<------Downstream
---------------5 min---------------
cap reached
here
From B to A total time taken by cap to reach at A =5+5
=10 min (B-->C--C-->B-->A)
Total distance covered by capto reach frm B to A =1 mile (with speed of river)
so speed of river =1 mile/ 10 min
= 1/(10/60)hr
=6 mile/hr Ans
| Is This Answer Correct ? | 66 Yes | 2 No |
Answer / ashique hussain
1+(u-v)*5=(u+v)*5
=> v=1/10 mile/min.
so v=(1/10)*60 = 6 mile/hr.
| Is This Answer Correct ? | 21 Yes | 1 No |
Answer / shiva ramnos
The hat fallen after travelling one mile and after that they
travelled for (5MIN.)
so that hat travelled down stream for one mile and they
collected the hat after 5mins of travel down stream. So the
total time they spent after losing hat is 10 minutes.In this
10 minutes the hat exactly traveled 1 mile(i.e with river
speed). So its very clear----> the river speed is 6miles/hour.
| Is This Answer Correct ? | 21 Yes | 4 No |
Answer / widyasaagar
after they travel 1mile(distance from the bank) hat fallen and son said to his father after they travel upto 5 min. in this 5 mins hat travel some distance they returned and reach the bank in 5mins means they travel 10mins at the same time hat reaches the bank so hat travels 1mile in 10 mins so hat speed is 6miles/hr is nothing byt river speed.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / bh sai krishna
The hat was lost and they travelled for 5 minutes then son told his father that hat has fallen now again they travell for 5 minutes now in this 10 minutes the hat travelled 1 mile so it means
1mile in 10 minutes ===>x miles in 60 minutes
so 6 miles in 60 minutes thats is the speed of water or river
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / raviteja900
The hat fallen after travelling one mile and after that they
travelled for 5mins.
so that hat travelled down stream for one mile and they
collected the hat after 5mins of travel down stream
so the speed of river is equal to the hat speed but not the
boat speed as they row the boat even in down stream and
speed will be more than the river speed.
so the speed of river is 12 miles/hr
| Is This Answer Correct ? | 8 Yes | 57 No |
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