The average salary of all the employees in a company is Rs.14,000. The average salary of 5 technicians is Rs.18,000 and the average salary of the rest is Rs.13,200. The total number of employees in the company is.
(a) 25
(b) 30
(c) 35
(d) 40
Sol:
140x=180×5+132(x-5)
140x=900+132x-660
8x=240
X=30
