An ancient coin is made of Bronze, an alloy contains copper and tin in the ratio 5 : 1. Another coin is made of Brass, an alloy contains copper and zinc in the ratio 2 : 3. A new coin is formed by melting bronze and brass, such that equal amounts of copper came from brass and bronze. By what percent is the quantity of zinc present, more than the quantity of tin, in the new alloy?

An ancient coin is made of Bronze, an alloy contains copper and tin in

1.	An ancient coin is made of Bronze, an alloy contains copper and tin in the ratio 5 : 1. Another coin is made of Brass, an alloy contains copper and zinc in the ratio 2 : 3. A new coin is formed by melting bronze and brass, such that equal amounts of copper came from brass and bronze. By what percent is the quantity of zinc present, more than the quantity of tin, in the new alloy?
A.	300%
B.	650%
C.	900%
D.	65%
E.	None of these
Answer» C. 900%

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