SOLUTION: Philip, Joshua and Peter weigh 50, 85 and 120 lbs. respectively and use a 12 ft. plank for a teeter board. philip sits 5 ft. Joshua sits 4 ft. and Peter sits 3 ft. from the fulcrum

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Question 1124464: Philip, Joshua and Peter weigh 50, 85 and 120 lbs. respectively and use a 12 ft. plank for a teeter board. philip sits 5 ft. Joshua sits 4 ft. and Peter sits 3 ft. from the fulcrum on the same side. How far must a 200- pound friend sit from the fulcrum to balance them?
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.
The equation is


50*5 + 85*4 + 120*3 = 200*x.


950 = 200x  ====>  x = 950%2F200 = 4.75 ft


Answer.  4.75 ft.