[計量] CAT test 11 12
test11:
19. In 2002, McDonald's sold 20% more cheeseburgers than in 2001, and in 2002
the price of each cheeseburger they sold was 10% more than in 2001.
The gross income from the sale of cheeseburgers was what percent greater
in 2002 than in 2001?
ans : 32%
test 12:
2. If p is the number on the number line between 2 and 20 that is twice as
far as from 2 as from 20, then p is?
ans : 14
想問想這種句型到底要怎麼分辨誰是誰的幾倍?
5. If x and y are positive integers, and 30(x-2)=68(y+3), what is the least
possible value of x+y?
(a)38 (b)48 (c)68 (d)97 (e)98
ans : 48(b)
我找不出好方法，只好一個個答案代進去算了
請問有其他方法嗎?
22. Each house number on Main Street has 4 digits, and all of them look
identical. Pan wants to play a visit to his friend, and he remenbers the
first 2 digits of his friend's address. However, he has forgotten the last
2 digits. All Pat can make sure is that his friend's house number is odd.
If Pat chooses a house based on what he knows about the address, what is
the probability that Pat will coose his friend's house?
ans : 1/50
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