The average monthly salary of laborers and supervisors in a factory is Rs.1250 per month; where as the average monthly salary of 6 supervisors is Rs.2450. If the average monthly salary of the laborers is Rs.950 find the number of laborers?	Choose the correct choice
A) 11 B) 42 C) 77 D) 88 E) 12
5x 6x 2x   50 25 100   250x + 150x + 200x = 4200   600x = 4200   x = 7 =&gt; 6x = 42   Answer:42
<result>B</result>
The average monthly salary of laborers and supervisors in a factory is Rs.1250 per month; where as the average monthly salary of 6 supervisors is Rs.2450. If the average monthly salary of the laborers is Rs.950 find the number of laborers?