P219 176

antonia

P219 176
In order to increase revenues, an airport plans to change the parking fees it charges at its hourly parking lots. Rather than charging $2.00 for the first two-hour period or part thereof(何意？), and $1.00 for each hour thereafter, the airport will charge $4.00 for the first four-hour period, on part thereof, and $1.00 for each hour thereafter.
--which of the following is a consideration that, if true, suggests that the plan will be successful in increasing revenues?
(A) Very few people who park their cars at the hourly parking lot at the airport leave their cars for more than two hours at a time.
能帮我分析一下这道题吗？conclusion 和evidence各是什么？我对A摸棱两可，请问是如何推出来的？

linsonstudy

A的意思是很少人是把车停在那里两个小时以上。这样airport提升第一个小时的费用，就会有显著的提升了。假设每个刚好挺一小时，那加了2元，就等于加了一倍的收入了。试想一下，如果每个人都把车停上20小时，也就是要付21元，那现在第一小时加了2元，也就是23元，那就差别不怎么大了。

hopejie

同意linsonstudy的分析。