A loonie is a $1 coin and a dime is a $0.10 coin. One loonie has the same mass as 4 dimes. A bag of dimes has the same mass as a bag of loonies. The coins in the bag of loonies are worth $400 in total. How much are the coins in the bag of dimes worth?
(A) $40 (B) $100 (C) $160 (D) $1000 (E) $1600
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