A telecom service provider engages male and female operators for answering 1000 calls per day. A male operator can handle 40 calls per day whereas a female operator can handle 50 calls per day. The male and the female operators get a fixed wage of Rs. 250 and Rs. 300 per day respectively. In addition, a male operator gets Rs. 15 per call he answers and female operator gets Rs. 10 per call she answers. To minimize the total cost, how many male operators should the service provider employ assuming he has to employ more than 7 of the 12 female operators available for the job?	Choose the correct option
A) 15	B) 14	C) 12	D) 10	E) 11
Explanation :   There are two equations to be formed 40m + 50f = 1000.   250m + 300f + 40 x 15m + 50 x 10f = A.   850m + 8000f = A.   m and f are the number of males and females. A is the amount paid by the employer.   Then the possible value of f = 8,9,10,11,12.   Iif f= 8, M =15.   If f = 9,10,11 then m will not be an integer while f =12 then m will be 10.   By putting f = 8 and m=15 , A = 18800.   when f =12 and m= 10 then A = 18100.   Hence, the number of males is 10.   Answer : 10
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A telecom service provider engages male and female operators for answering 1000 calls per day. A male operator can handle 40 calls per day whereas a female operator can handle 50 calls per day. The male and the female operators get a fixed wage of Rs. 250 and Rs. 300 per day respectively. In addition, a male operator gets Rs. 15 per call he answers and female operator gets Rs. 10 per call she answers. To minimize the total cost, how many male operators should the service provider employ assuming he has to employ more than 7 of the 12 female operators available for the job?