10 9 3 grade math problem wrong Zhuantie

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,[link widoczny dla zalogowanych]
question now is: Step shoes store millet in the loss of this transaction in the end how much?
A .94 B .100 C .44 D .50 E .79 F .15 G .71
day, a young man came to the store to buy millet step a pair of shoes shoes. This pair of shoes cost 15 yuan,[link widoczny dla zalogowanych], the price is 21 yuan. The result is the young man took out 50 to buy these shoes. Shoes store millet did not change further,[link widoczny dla zalogowanych], with that 50 to 50 dollars for residents change, looking for young people 29. But the neighborhood was later found that 50 ***,[link widoczny dla zalogowanych], millet step shoes shop desperation, but also the neighborhood 50.