Equivalent units for three inputs, carried under first-in, first-out with a weighted-average check beside them, fill the AC420 Unit 4 process costing worksheet for a skillet seasoning line. Searches like "ac 420 unit 4 assignment example", "ac420 unit 4 sample" and "ac420 unit 4 example" land here.
What a finished AC420 Unit 4 process costing worksheet looks like
Five linked schedules on one sheet, plus a two-column check at the foot. The physical flow reconciles 4,000 beginning skillets and 36,000 received from the foundry against 37,000 finished and 3,000 still on the line. Equivalent units come next in three columns: transferred-in castings, conversion and packaging. Under first-in, first-out they read 36,000, 37,500 and 37,000; the packaging column counts nothing for ending work because boxes go on at completion. Costs per equivalent unit follow at 4.95, 2.50 and 1.40 dollars. The assignment schedule splits 343,510 dollars into 323,410 transferred to finished goods, with beginning units costed apart from those started and completed, and 20,100 left in ending work in process. The check column reworks the month under weighted average and shows ending work 263.82 dollars lower.
How a AC420 Unit 4 example is structured
Every schedule states its flow assumption in its heading, which prevents the most expensive mix-up on this topic. The physical count balances first. The equivalent unit schedule then treats each input by its point of entry: transferred-in castings count as fully complete whenever they are on the line, conversion follows the stated percentages, and packaging counts only for units that finished. Beginning inventory gets its own row under first-in, first-out, receiving just the 60 percent of conversion and the packaging it still needed. Current-period costs alone go into the rates, so the beginning balances of 17,600 and 2,160 dollars travel with the units they belong to. The weighted-average column sits last and apart, blending those balances into its rates, and a closing sentence explains why the gap is small here: beginning inventory is little more than a tenth of the month's output.
Units in, units out
4,000 beginning skillets plus 36,000 castings received equal 37,000 finished plus 3,000 on the line. The count balances before a dollar enters the worksheet.
Three columns, three entry points
Transferred-in castings at 100 percent, conversion at the stated completion, packaging only at the end, so ending work carries no box cost at all.
Rates from current costs only
178,200, 93,750 and 51,800 dollars over first-in, first-out equivalent units give 4.95, 2.50 and 1.40, with beginning balances held apart.
Last month's skillets finished separately
The 4,000 beginning units carry their 19,760 dollars forward and pick up only the conversion and packaging added this month, 31,360 in total.
The weighted-average check
Blending beginning balances into the rates gives 8.7479 dollars a unit against 8.85, and ending work of 19,836.18 instead of 20,100.
Where marks go in AC420 Unit 4
Mixing the two methods is the error this worksheet is designed to expose, and it is marked wrong twice over: last month's work on beginning units is left out of equivalent units, a first-in, first-out step, while its cost stays in the numerator, a weighted-average step. The next most common loss is packaging counted at the conversion percentage for ending work, which charges boxes to skillets that have none yet. Transferred-in cost treated as partly complete draws a deduction every time it appears. Beginning inventory folded into started-and-completed units, with no separate costing of the work it still needed, hides the feature that makes first-in, first-out worth using. A reconciliation that fails to return 343,510 dollars, or that closes only through an unexplained rounding plug, loses marks as well.
Get a AC420 Unit 4 example written to your instructions
The Unit 4 problem's unit counts, completion percentages and costs by input decide everything here, so include them along with the flow assumption your instructions require and the rubric. Worked on those figures, the schedules reconcile to the dollar, with a second method shown only if the prompt calls for it. Expect it in 24-48h; the first custom sample is free.
AC420 Unit 4 questions, answered
Why is the difference between the two methods so small?
Because beginning inventory is small relative to the month's output and its unit costs sit close to this month's. The two methods drift apart when beginning work is large or input prices moved sharply between periods. Here castings rose from 4.40 to 4.95 dollars, yet the effect on ending inventory is only 263.82, which the worksheet states rather than inflating.
How does spoilage change the worksheet?
If castings fail inspection partway down the line, the spoiled units get their own row in the physical flow and their own equivalent units up to the inspection point. Normal spoilage cost is then assigned to the good units that passed inspection, and abnormal spoilage goes to a loss account. The sample adds that row when the problem includes rejects, keeping it visible rather than netting it away.
Does the worksheet need a production cost report format?
If the course uses one, yes, and the sample follows its layout. The five schedules map onto the standard report: physical units, equivalent units, costs to account for, cost per equivalent unit and costs accounted for. Some AC420 sections prefer a single spreadsheet with formulas visible; others accept a typed report. Mention which one your section uses.