Who is free at 2:15 PM?
4 barbers can do Shampoo then, in the shop's own order.
No preference takes the lightest book of the 4 barbers open at 2:15 PM, so the work spreads across the shop instead of piling onto one chair.
4 barbers can do Shampoo then, in the shop's own order.
No preference takes the lightest book of the 4 barbers open at 2:15 PM, so the work spreads across the shop instead of piling onto one chair.