SOLUTION: Jack and Jill sat at the ends of an 18 foot long seesaw where the fulcrum was placed in the middle of the board. By placing a 20 pound weight 3 feet in front of Jill,they were in b

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Question 136881: Jack and Jill sat at the ends of an 18 foot long seesaw where the fulcrum was placed in the middle of the board. By placing a 20 pound weight 3 feet in front of Jill,they were in balance.If Jack weighs 140 pounds,which equation could be used to determine Jill's weight(x)in pounds?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
x(9)+20(9-3)=140(9)