CBSE BOARD X, asked by jmk413512, 9 months ago

The speed of the boat in calm water is 30 km/h. A boat takes the same time to travel 10 km
upstream as it does to travel 15 km downstream. Find the speed of the river current.​

Answers

Answered by 01kritika
3

Answer:

Let speed of boat be x km/h.

Given speed of current = 5 km/h

Therefore, Upstream speed of boat = (x-5) km/h

Downstream speed of boat = (x + 5) km/h

According to the question,

10x−5+10x+5=5060

10(x+5+x−5x2−25)=56

12×2x=x2−25

x2−24x−25=0

x2−25x+x−25=0

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(x−25)(x+1)=0

Therefore, x = 25

Answered by jasmeetnagra8
0

Answer:

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