Answer:
First calculate total machine hours
1500 + 1500 + 4500 = 7500 total machine hours
personnel = 1500/7500 x 4,800
printing = 1500/7500 x 4,800
developing = 4500/7500 x 4,800
for personnel:
500 printing + 3,500 developing = 4,000
For Departments:
printing = 500/4,000 x 15,760
developing = 3,500/4,000x 15,760
