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[" A goldsmith desires to test the purit...

[" A goldsmith desires to test the purity of a gold omament "],[" suspected to the mixed with copper.The ornament weighs "],[0.25kg" in air and is observed to displace "theta.015" litre of "],[" water when immersed in it.Densities of gold and coppe "],[" with respect to water are,respectively,"19.3" and "8.9" .The "],[" approximate percentage of copper in the ornament is "],[" a."5%" .b."10%" c."15%" d."25%]

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A goldsmith desires to test the purity of a gold ornament suspected to the mixed with copper. The ornament weighs 0.25 kg in air and is observed to displace 0.015 litre of water when immersed in it. Densities of gold and copper with respect to water are, respectively, 19.3 and 8.9 . The approximate percentage of copper in the ornament is

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