Answer: $22,500
Explanation:
First calculate the rate of allocation based on sales to determine how much of Department T's sales should be attributed to Advertising.
The Rate of Allocation based on Sales = Advertising Expense/Total sales
= 50,000/475,000
= 0.105263
= 10.5263%
This 10.5% can then be used to find out how much of Advertising to apportion to Department T based on department sales,
= Department sales * Allocation rate
= 213,750 * 10.5263%
= $22,500
$22,500 should be allocated to Department T.