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Two children are sitting on a seesaw that is 12ft long. One child weighs 60lb. The other child weighs 90lb. How far from the 90-pound child should the fulcrum be places so that the seesaw balances?

Please show me the answer and please help

Answer :

Answer:

Step-by-step explanation:

moments about the fulcrum should be equal

IF x is the distance of the fulcrum from the 90 lb child

90[x] = 60[12 - x]

90x = 720 - 60x

150x = 720

x = 4.8 ft

90(4.8) = 432 ft•lb

60(12 - 4.8) = 432 ft•lb

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