单项选择题

Of 40 pairs of socks in a drawer, x pairs are solid white, y pairs are solid gray, and more than 19 of the pairs are striped.（）

A. if Quantity A is greater;
B. if Quantity B is greater;
C. if the two quantities are equal;
D. if you cannot determine the relationship based on the given information.

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单项选择题

If q workers can paint a house in d days, how many days will it take q+2 workers to paint the same house, assuming all workers paint at the same rate（）

A.A
B.B
C.C
D.D
E.E

单项选择题

Abuyer pays a $1.00 tax on an item that costs $10.00 after the tax is added.（）

A. if Quantity A is greater;
B. if Quantity B is greater;
C. if the two quantities are equal;
D. if you cannot determine the relationship based on the given information.