How to Solve a Lever Word Problem with Algebra: Example #2. [HD]

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Published on November 1, 2016 9:27:26 PM ● Video Link: https://www.youtube.com/watch?v=c6xPPcWiE7g

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Four girls decided to use the same teeter-totter. Two of them weighing 75 pounds and 50 pounds, respectively, sat on opposite ends of the 12-foot board which had the balance point at the center. The third girl weighing 60 pounds got on the same side as the one weighing 50 pounds and sat 5 feet from the fulcrum. Where must the fourth girl sit so the teeter-totter is balanced if she weighs 40 pounds?

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