There are two piles, one containing 9 gold coins and the other11 silver coins. The two piles of coins weigh the same. One coin istaken from each pile and put into the other. It is now found thatthe pile of mainly gold coins weighs 13 units less than the pile ofmainly silver coins. Let x represent the weight of each gold coinand y the weight of each silver coin. Find the weight of a silvercoin and of a gold coin

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Let x weight of each gold coin and y weight of each s... View the full answer