Question

A river flows at 2 m/s. Juan's boat can travel twice as fast down the river as it can go up the river. How fast does the boat go in still water?

Answer 1

Answer:

Step-by-step explanation:

s=speed of boat in calm water.

s+2=2(s-2)

s+2=2s-4

-s=-6

s=6 m/s

Answer 2

Let speed of boat be x m per second .

movement upward in river= (×-2)m per second -------- equation 1

movement downward in river =(×+2)m per second ---------equation 2

according to the question

equation 1 ×2= equation 2

2 (×-2) =(×+2)

2×-4=2+×

2×-×=2+4

×=6 m per second

PLEASE MARK IT AS BRAINLIST.