Apportionment of shared canteen costs based on employee numbers Steps:

• Subtract special function cost from department 1's total: $4200 -$3000 = $1200 (department 1's share of general costs).
• Total employees = 15 + 10 = 25; department 1's proportion = 15/25 = 3/5.
• General costs total = $1200 ÷ (3/5) =$1200 × (5/3) = $2000.
• Department 2's share = $2000 × (10/25) =$800.

Not enough information to match the given options, as calculation yields $800 for department 2.

Final answer: Not enough information.