Sushi costs $3 per piece.Cynthia's total utility after eating one piece is 30 and her total utility after eating 2 pieces is 51,so her marginal utility from the second piece is
A) 17.
B) 10.
C) 51.
D) 7.
E) 21.

Question

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The Answer of Sushi costs $3 per piece.Cynthia's total utility after eating one piece is 30 and her total utility after eating 2 pieces is 51,so her marginal utility from the second piece is
A) 17.
B) 10.
C) 51.
D) 7.
E) 21.

Sushi Costs $3 Per Piece