A professor has recorded exam grades for 30 students in his class, but one of the grades is no longer readable. If the mean score on the exam was 82 and the mean of the 29 readable scores what is the value of the unreadable score?
The value of the unreadable score is

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.