The average salary/head of all the workers in a workshop is Rs.1100, if the average salary/head of 9 technician is Rs.1300 and the average salary/head of the rest is Rs.880, the total no. of workers in the work-shop is ? Choose the correct choice from the following options:
A) 18 B) 20 C) 22 D) 17 E) 26
Let the total number of workers be y.
So sum of salary for all workers = sum of salary of 9 technician + sum of salary for other y -9 workers.
9 x 1300 + 880(y -9) = 1100 y
⇒ 11700 + 880y - 7920 = 1100y
⇒ 220y = 3780
∴ y = 17 So total number of workers = 17 17
<result>D</result>
The average salary/head of all the workers in a workshop is Rs.1100, if the average salary/head of 9 technician is Rs.1300 and the average salary/head of the rest is Rs.880, the total no. of workers in the work-shop is ?