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向大家求教几道题，晕了，，，，，，
1.The projected school tax rate is set at $11.25 per 1000.what is X’s house assessed for?
(1) Mr.X will pay $202.5 in school taxes under the proposed new budget.
(2) He paid $217.85 last year.
给出的答案是A，我选的是E，不太明白….
2.In a certain country，the retail price includes a value added tax of 12.5% of the sum of the wholesale cost and the markup of an item.
If the value added tax on a certain jacket is 6 shillings，what is the wholesale cost of a jacket in shillings?
(1) the markup represents 50% of the wholesale cost.
(2) the markup of the jacket is 16 shillings.
给出的答案是D，我选的是C。
3,during a 5-day period，Monday through Friday，the average(arithmetic mean ) high temperature was 86 degrees Fahrenheit。What was the high temperature on Friday?
(1) the average high temperature for Monday through Thursday was 87 degrees Fahrenheit
(2) the high temperature on Friday reduced the average high temperature for the week by 1 degree Fahrenheit
给出的答案是D，我选的是A，week还包括周末两天。
4,a home owner must pick between paint A，which costs $6 per liter，and paint B，which costs 4.5 per liter。Paint B takes one-third longer to apply than paint A。if the home owner must pay the cost of labor at the rate of $36 per hour，which of the 2 paint will be cheaper to apply？
(1) the ratio of the area covered by one liter of paint A to the area covered by paint B is 4/3.
（2）paint A will require 40 liters of paint and 100 hours of labor.
给出的答案是E，我选的是A，钱的比例和面积的比例相同
5.what is the value of the sum of a sequence of 3 consecutive even integers？
(1) the average of the 3 consecutive even integers is 14
(2) the product of the smallest and the largest is 192
给出的正确答案是D。我选的是A，因为考虑到正负号不知。 |
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