Question

In: Economics

Twentyfirst Century Electronics has discovered a theft problem at its warehouse and has decided to hire...

Twentyfirst Century Electronics has discovered a theft problem at its warehouse and has decided to hire security guards. The firm wants to hire the optimal number of security guards. The following table shows how the number of security guards affects the number of radios stolen per week. # of security guards # of stolen per week 0 50 1 30 2 20 3 11 4 7 5 4 a. If each security guard is paid $400 a week and the cost of a stolen radio is $50, how many security guards should the firm hire? b. If the cost of a stolen radio is $50, what is the most the firm would be willing to pay to hire the first security guard? c. If each security guard is paid $400 a week and the cost of a stolen radio is only $30, how many security guards should the firm hire?

Solutions

Expert Solution

The firm wants to hire the optimal number of security guards.

a. If each security guard is paid $400 a week and the cost of a stolen radio is $50, 3 security guards will be hired by the firm. This is because when the third guard is hired, the cost saved by the guard is 450 and the wages are $400. For the fourth worker the savings are 200 while wage is 400 so it is not worth to hire 4th guard.

Guards Stolen radios Cost of radios Reduction in the cost (marginal)
0 50 2500 2500
1 30 1500 1000
2 20 1000 500
3 11 550 450
4 7 350 200
5 4 200 150

b. If the cost of a stolen radio is $50, the most the firm would be willing to pay to hire the first security guard is the cost saved by hime, it is 1000

c) . If each security guard is paid $400 a week and the cost of a stolen radio is only $30, only 1 security guards will be hired because the reduction in cost is 600

Guards Stolen radios Cost of radios Reduction in the cost (marginal)
0 50 1500 2500
1 30 900 600
2 20 600 300
3 11 330 270
4 7 210 120
5 4 120 90

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