20¢ 50¢
Box A : Box B Diff Box B -- Box A
2 : 1 0.50--0.40 = $1.60
0.20 * 2 : 0.50 0.104 = 1.60
0.40¢ u = 1.60
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16, 0.40¢ Coins Box A 0.10
32, 0.20¢ Coins Box A u = 16
The answer choice is C