Problem Solving

试题详情

题目:

When 200 gallons of oil were removed from a tank, the volume of oil left in the tank was 3/7 of the tank's capacity.  What was the tank's capacity?
(1)   Before the 200 gallons were removed, the volume of oil in the tank was 1/2 of the tank's capacity.
(2)   After the 200 gallons were removed, the volume of oil left in the tank was 1,600 gallons less than the tank's capacity.

选项:

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.

答案:

D

提问:

When 200 gallons of oil were removed from a tank, the volume of oil left in the tank was 3/7 of the tank's capacity. What was the tank's capacity? (1) Before the 200 gallons were removed, the volume of oil in the tank was 1/2 of the tank's capacity. (2) After the 200 gallons were removed, the volume of oil left in the tank was 1,600 gallons less than the tank's capacity. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. EACH statement ALONE is sufficient. Statements (1) and (2) TOGETHER are NOT sufficient.
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