GMAT 考满分题库

A $10 bill (1,000 cents) was replaced with 50 coins having the same total value. The only coins used were 5-cent coins, 10-cent coins, 25-cent coins, and 50-cent coins. How many 5-cent coins were used?

1.Exactly 10 of the coins were 25-cent coins and exactly 10 of the coins were 50-cent coins.

2.The number of 10-cent coins was twice the number of 5-cent coins.
  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2)TOGETHER are NOT sufficient.
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正确答案: A

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