The ABC system is a method for controlling inventories that divides inventory items into three groups: Group A -- high-monetary value items, which account for a small portion perhaps 10%) of the total inventory usage Group B -- medium-monetary value items, which may account for about 20% of the total inventory items
Group C -- low-monetary value items, which account for the remaining 70% of sales or usage The ABC system permits the proper degree of managerial control to be identified and exercised over each group. Group A items are reviewed on a regular basis. Group B items may not have to be revered as often as group A items, but more often than group C items. For group C, extensive use of models and records is not cost effective. It is cheaper to order large quantities infrequently. The ABC method therefore reduces the safety-stock investment because high-value items are frequently monitored and medium-value items are monitored more often than inexpensive items. Frequent review can prevent stockouts and decrease inventory levels, and the cost of such review is minimized if it is limited to high- or mediumvalue items.

When making a cost-time trade-off, the first activity to be crashed have its completion time accelerated) is one on the critical path. To select an activity on another path would not reduce the total time of completion. The initial activity chosen should be the one with the completion time that can be accelerated at the lowest possible cost per unit of time saved.

A deferred tax asset records the deferred tax consequences attributable to deductible temporary differences and carry forwards Advance rental receipts accounted for on the actual basis for determining accounting profit and on a cash basis for determining taxable profit tax loss) would give rise to a deferred tax asset. The financial statements would show no income and no related tax expense because the rental payments apply to future periods. The tax return, however, would show the rent as income when the cash was received, and a tax would be due in the year of receipt. Because the tax is paid prior to recording accounting profits, it represents an asset that will be no due in the year of receipt. Because the tax is paid to prior to recording accounting profits, it represents an asset that will be recognized as an expense when income me is finally recorded.

Under the fair-value-based method prescribed by IFRS 2, compensation expense is measured at the grant date. This expense is based on the fair value of the award at that date and recognized over the sting period, the period over which the vesting conditions are expected to be satisfied.