求助“陈向东”两道题，下月就要考试了

szy733

1 A home owner must pick between paint A, which costs 6 dollar per liter, and paint B, which costs 4.5 dollar 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 dollar per hour, which of the two paints 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

答案是E，我选的是C

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 jacket in shillings?

(1) the markup represents 50 percent of the wholesale cost

(2) the markup of the jacket is 16 shillings

答案是D

[此贴子已经被作者于2009-3-2 11:22:07编辑过]

szy733

帮忙啊！