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The average salary of all the workers in a workshop is 8000. the salary of 7 technicians is 12000 and the rest is 6000 . how many workers are there in the

the average salary of all the workers in a workshop is 8000. the
salary of 7 technicians is 12000 and the rest is 6000 . how many
workers are there in the workshop

Solution: Let the total Number of Workers in a Workshop = X Average Salary Of X workers = 8000. therefore Sum of Salary of all Workers = Number Of Workers * Average salary = X * 8000 = 8000X Therefore , According to Question , 7 technicians have 12000 salary while rest of the workers have 6000 salary . Hence, 12000 * 7 + (X - 7 )*6000 = 8000X => 84000 + 6000X - 42000 = 8000X => 42000 + 6000X = 8000X => 42000 = 8000 X - 6000 X => 42000 = 2000 X => 42000/2000 = X => 21 = X => X =21