CORRECT ANSWER, PLEASE

Show and Sell can advertise its products on local radio or television. The advertisement budget is limited to $10,000 a month. Each minute of radio advertisement costs $15 and each minute of TV commercial costs $300. Show and Sell likes to use radio advertisement at least twice as much as TV. In the meantime, it is not practical to use more than 400 minutes of radio advertisement a month. Past experience shows that TV advertisement is estimated to be 25 times more effective than that of radio. 1 Determine the optimum allocation of the budget to radio and TV advertisements. 2. Determine the worth per unit of increasing the monthly limit on radio advertisement. 3. If the monthly budget is increased to $15,000, determine the resulting optimum measure of advertisement effectiveness