Ryder Company produces a single product, school backpacks made of a sturdy nylon fabric. The production of  these bags requires a relatively large amount of labour time. Overhead cost is applied on the basis of standard direct labour-hours. The company's condensed flexible budget for manufacturing overhead is given below:

Each backpack requires 2 metres of direct material that has a standard cost of $1.50 per metre. The product requires 1.5 hours of direct labour time. The standard labour rate is $10 per hour.

During the year, the company had planned to operate at a denominator activity level of 15,000 direct labour-hours and to produce 10,000 units of product. Actual activity and costs for the year were as follows:

Required

1. Compute the predetermined overhead rate for the year. Break the rate down into variable and fixed components.

2.

a. Compute the standard direct labour-hours allowed for the year's production.

b. Complete the following manufacturing overhead T-account for the year:

3. Determine the reason for the under applied or over applied overhead from (2) above by computing the variable overhead spending and efficiency variances and the fixed overhead budget and volume variances.

4. Suppose the company had chosen 18,000 direct labour-hours as the denominator activity rather than 15,000 hours. State which, if any, of the variances computed in (3) above would have changed, and explain how the variance(s) would have changed. No computations are necessary.

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Cost Direct Labour-Hours Formula (per DLH) 12,000 Overhead Costs 15,000 18,000 Variable manufacturing overhead cost Fixed manufacturing overhead cost.. $1 $15,000 $12,000 $18,000 75,000 75,000 $90,000 75,000 $93,000 $87,000 Total manufacturing overhead cost