Question (1/66)
The average salary of all workers in a workshop is 8000. The average salary of 7 technician is 12000 and average salary of rest is 6000. Find the total number of workers in workshop ?(A) 21
(B) 22
(C) 23
(D) 24
Question (2/66)
The arithmetic mean of the score of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% of them secured mean score of 31. What is mean score of remaining 55% students ?(A) 50.50
(B) 51.04
(C) 51.36
(D) 52.55