单项选择题

A purchase plan for a stereo receiverre quires 20 percent of the total cost as adown payment and monthly payments of$30．（）

A、if the quantity in Column A is greater;
B、if the quantity in Column B is greater;
C、if the two quantities are equal;
D、 if the relationship cannot be determined from the information given.

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单项选择题

Brand R coffee costs $3.25 per pound and brand T coffee costs $2.50 per pound． The number of pounds of brand R in a？（）

A、if the quantity in Column A is greater;
B、if the quantity in Column B is greater;
C、if the two quantities are equal;
D、 if the relationship cannot be determined from the information given.

单项选择题

Water is to be poured at a rate of 2.5gallons per minute into a 500-gallon tank that initially contains 50 gallons of water．（）

A、if the quantity in Column A is greater;
B、if the quantity in Column B is greater;
C、if the two quantities are equal;
D、 if the relationship cannot be determined from the information given.