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Hanging myself tmr
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I'll help you w/ 5; use above as ref to learn 5. y = still water x = current speed + for with the water - for going against the water elimination y+x=5.75. (x+ and x- cancel out) y-x=3.25 -------------- 2y=9 /2 /2 y=4.5 (still water) y+x=5.75 4.5 +x = 5.75
