2 years ago

How do i answer this

Mathematics

1 answer:

8_murik_8 [283]2 years ago

3 0

Wherever there is an x , plug in 20,000

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Let b and s be the velocity of the boat and stream respectively....

3(b-s)=27

b-s=9

b=9+s we will use this in the second equation....

2(b+s)=30

b+s=15, now use b found above in this to get:

9+s+s=15

2s+9=15

2s=6

s=3, and since from earlier b-s=9, b=9+s so

b=12

So the speed of the boat is 12mph and the stream is 3 mph

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