Describe the energy inputs and outputs for the campfire use the law of conversation of energy to construct a valid equation that includes all the inputs and outputs energies involved

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.