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OpenStudy (candycanegone):
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OpenStudy (sshayer):
let the speed of current =x m/h let speed of cruise in calm water=y m/h then 3y+3x=45 y+x=15 5y-5x=45 y-x=9 find x and y
OpenStudy (candycanegone):
how?
OpenStudy (sshayer):
add the two 2y=15+9=24 y=24/2=12m/h 12+x=15 x=15-12=3 m/h
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