The director of human resources, On a Tripp, of the Feedem-Speedem Airlines must
ID: 439712 • Letter: T
Question
The director of human resources, On a Tripp, of the Feedem-Speedem Airlines must decide how many new flight attendants to hire and train over the next six months. The requirements, expressed as the total number of attendant flight-hours needed, are 8000 in Jan, 9000 in Feb, 7000 in March, 10000 in April, 9000 in May, and 11000 in June. It takes one month of training before a flight attendant can be put on a regular flight; so an attendant must be hired at least a month before he/she is needed. Each trainee requires 100 hours of direct supervision by experienced flight attendants during the month of training, so that 100 less hours are available for flight service by regular attendants. Each fully trained flight attendant can work up to 150 hours in a month and Feedem-Speedem has 80 experienced (i.e. fully trained) attendants employed at the beginning of Jam. If the max time available from experienced flight attendants exceeds a month's flying and training requirements, the regular attendants may work fewer than 150 hours during that month and none are laid off. The average attrition rate for experienced attendants (who usually tend to quit their jobs for obtaining higher attrition among new hires during the one-month training period is negligibly small. A fully trained flight attendant costs the company average of $3,850 and a new trainee $2,500 per month, in salary and other benefits. Formulate (clearly define all variables used and construct the objective function and all constraints) a general linear programming model. Do not solve.Explanation / Answer
this trip like this had already being occurred and this is not the first time so the estimated time required is already known, so just apply the techniques of CPM (Critical Path Method) and find the most favorable time :)