the ratio of weights of copper and zinc in brass is 13:7. Find the weight of zinc in a brass utensil weighing 800gm
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Weight of the brass utensils= 800gm
Let weight of copper be 13x and weight of zinc be 7x
13x+7x= 800
=> 20x= 800
=> x= 800÷20
=> x= 40
Weight of copper= 13x= 13×40= 520gm
Weight of zinc= 7x= 7×40= 280gm
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