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There are 25 students in Mrs. Smith’s first period algebra class. On Monday, students were absent and the other 20 students took a test. The average grade for those students was 86. The next day after the five absent students took the test, the class average was 88. What was the average of those five students’ grades?
The average (arithmetic mean) of a set of 9 numbers is 99. After one of the numbers is deleted from the set, the average of the remaining numbers is 89. What number was deleted?
Maria has taken four chemistry tests and has an average (arithmetic mean) score of 80. If she scores a 90 on her fifth chemistry test, what is her average for those five tests?
The average points scored for 5 basketball players in last night’s game was 12.4 points. When the leading scorer’s score is taken away, and the coach averages the other four players, the new average is 10. What was the leading scorer’s score?
The mean weight of 6 pieces of fruit in a bag is 10.5 ounces. If a seventh piece of fruit is added to the bag, the mean weight becomes 11 ounces. What was the weight of the seventh piece of fruit?
A baseball team scored the following number of runs in their 11 games this season: 6, 2, 5, 9, 11, 4, 5, 8, 6, 7, 5.
If the team wants to end the season with an average of 6 runs per game, how many runs must they score in their final game of the season?