GMAT Test Prep: DS-48122988 GMAT Data Sufficiency

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.