Speed of the boat in still water is 15 km/hr and
the speed of the current is 7 km/hr. Find the total
time taken by a man rowing to a place at a
distance of 88 km and back.
Answers
Answered by
2
Answer:
Given :
Speed of boat in still water =15 km/hr
Let x be speed of the stream in km/hr
Speed of the boat upstream =15−x
Speed of the boat down stream =15+x
Time taken for upstream T1=15−x30
Time taken for downstream T2=15+x30
Given, T1+T2=29
=15−x30+15+x30=29
=30(15−x1+15+x1)=29
=30((15−x)(15+x)15+x÷15−x)=29
=225−x230×
Answered by
0
Answer:
= 15 - 7 = 8 km/hr.
Step-by-step explanation:
Speed of the boat in still water is 15 km/hr and the speed of the current is 7 km/hr. Find the total time taken by a man rowing to a place at a distance of 88 km and back. Sol: The downstream speed is 15 + 7 = 22 km/hr and the upstream speed = 15 - 7 = 8 km/hr.
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