Amrit rows to a place 48 km distant and back in 14 hours. He finds that he can row 4km with the stream in the same time as 3 km against the stream. The rate of the stream is:
Answers
Answered by
1
Answer:
Step-by-step explanation:
Suppose he move 4 km downstream in x hours
Then,
Speed downstream = 4x
km/hr
Speed upstream = 3x
km/hr
∴48(4/x)+48(3/x)=14orx=12
So, Speed downstream = 8 km/hr
Speed upstream = 6 km/hr
∴ Rate of the stream
= 12
(8 - 6) km/hr
= 1 km/hr
Answered by
5
Answer:
1km/hr
Step-by-step explanation:
Suppose Amrit moves 4 km downstream in X hr
then we have speed DOWNSTREAM = 4/X km/hr
and also SPEED UPSTREAM = 3/X km/hr
so 48/(4/x) + 48/(3/x) = 14 and we have X = 1/2
so we have speed downstream = 8 km/hr and upstream speed = 6 km/hr
RATE OF STREAM = 1/2x(8-6) = 1km/hr
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