Q29:
Joanna bought only $0.15 stamps and $0.29 stamps.How many $0.15 stamps did she buy?
(1)She bought $4.40 worth of stamps.
(2)She bought an equal number of $0.15 stamps and $0.29 stamps.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
A 的意思就是除了各买10张（就是第二个条件）这个算法可以得出4.4外，没有别的算法了作者: gmatmba 时间: 2011-3-19 19:33
A is right.
0.29*10 + 0.15*10 = 4.40. There is no other possibilities because to get zero on the cents, you have to get even numbers of both stamps.作者: teddyabc 时间: 2011-3-20 07:54
谢谢大家了
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