单项选择题


In 1970，if 5 percent of the water use was for domestic purposes．approximately what was the daily average number of gallons of water used per capita for domestic purposes（）

A. 105
B. 50
C. 20
D. 10
E.5

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单项选择题
Family X’s gross income is the sum of M r．X’s income and Mrs．X’s income．In1983 Mr．and Mrs．X each had an income of $25，000．If Mr．X’s income increased by 10 percent from 1983 to 1984，by what percent did Mrs．X’s income decrease for the same period（）

A. 10%
B. 15%
C. 20%
D. 25%
E. 30%
单项选择题
During the first week of a certain month，how many more sales were made in Store X on Saturday than on Monday（）

A. 15
B. 25
C. 30
D. 35
E. It cannot be determined from the information given．
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