<PRE><B>Question 437882</B>
Sterling silver is made of an alloy of silver and copper in the ratio of 37:3.

If the mass of a sterling silver ingot is 600 grams,how much silver does it contain. 
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37:3 is the same as 37x:3x where 37x is silver and 3x is copper.
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Equation:
37x +3x = 600 grams
40x = 600
x = 15 grams
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Silver = 37x = 555 grams
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cheers,
Stan H.
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( the choices are) 
a)48.5 g
b)200 g
c)450 g 
d)555g
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