Budgeted monthly contributions were calculated as the sum of overheads, calculated at 35 per cent of monthly salary cost, plus profit at 10 per cent of the sum of monthly salary and overheads.
每月预算缴款额计算为间接费用总额，其计算方法是月工资费用的35%，加上月工资和间接费用总额10%的利润。