Question

12. A man covers 118 km by a boat travelling 4 hours downstream and 3 hours upstream. He
also covered 130 km travelling 5 hours downstream and 2 hours upstream. Find the speed
of the boat in still water and the speed of the water.
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Answer 1

Answer:

Step-by-step explanation:

The speed of the boat in still water is 6 km/hr and speed of the water is 29.33 km/hr.

Step-by-step explanation:

Since we have given that

Let the speed of the boat in still water be 'x'.

Let the speed of the water be 'y'.

Speed of downstream = x+y

Speed of upstream = x-y

A man covers 118 km by a boat travelling 4hours downstream and hours upstream is expressed as

Similarly,

Now, from (1) and (2), we get that

and the value of y would be

Hence, the speed of the boat in still water is 6 km/hr and speed of the water is 29.33 km/hr.