HELP FOR BRAINIEST AND 50 POINTS

2 answers:

7 0

X - speed of the current
40+x - speed with current
40-x - speed against current

t-time
(40+x)*t=100
(40-x)*t=60

40t+xt=100
<span> + 40t-xt = 60
</span> 80t =160
t = 2

40t+xt=100,
40*2+2x=100
80+2x=100
2x=100-80
2x=20
x=10 mi/h

10 mi/h speed of the current.

lapo4ka [179]3 years ago

4 0

The answer is x/10mph Hope I helped!

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