The standards company makes a product called Pro$-$Standard. The standard costings for one Pro$-$Standard are shown below:

Materials

$2$kg @ $6\mathrm{.}50$ per kg

$13$

Labour

$3$ hours @ $7\mathrm{.}00$ per hour

$21$

Fixed overhead

$4$ hours @ $3$ per hour

$12$

Variable overhead $3$ hrs @ $5$ per hour $15$

The budgeted selling price of a Pro$-$Standard for the period was $80.$ Budgeted sales volume $200$ Pro$-$Standards.

Actual Results

Pro$-$Standards sold

$240$

Sales Revenue

$19,500$

Actual Materials used

$528$ kgs

Cost of materials

$3200$

Actual Labour hours

$690$ hours

Actual labour cost

$6,720$

Actual Fixed Overhead

$2560$

Variable Overheads

$2,800$

The company uses an absorption costing system for all overheads.

Required

a$)$ Calculate the following, stating clearly whether each is adverse or favourable: $(10$ marks$)$