A swimmer swims from a point A against a current for 5 minutes and then swims backwards in favour of the current for next 5 minutes and comes to the point B. If AB is 100 metres, the speed of the current (in km per hour) is :
A) 0.4
B) 0.2
C) 1
D) 0.6
Answers
Answered by
1
Answer:
0.4 is the answer hope it helps
Answered by
3
Answer:
Correct Answer is 0.6
Step-by-step explanation:
OA = distance covered by upstream speed in 5 minutes
=560(x−y)
OB = distance covered by downstream speed in 5 minutes
=560(x+y)
OB−OA=AB
560(x+y)−560(x−y)=1001000 km.
560[x+y−x+y]=1001000 km
On solving
y = 0.6 km/hr.
∴Speed of the current = 0.6 km/hr.
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