[练习册] OG13-DS:121-140

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During a 6-day local trade show, the least number of people registered in a single day was 80. Was the average (arithmetic mean) number of people registered per day for the 6 days greater than 90 ?

(1)For the 4 days with the greatest number of people registered, the average (arithmetic mean) number registered per day was 100.

(2)For the 3 days with the smallest number of people registered, the average (arithmetic mean) number registered per day was 85.
  • 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 statement 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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