can you please help with question E11.22

E11.22 LO11.5 Straightforward calculation of overhead variances: manufacturer The data below relate to Sporty Ltd, a manufacturer of exercise equipment, for August Standard variable overhead rate Standard quantity of machine hours Budgeted fixed overhead Budgeted output S27 per machine hour 2 hours per unit of output $270 000 15 000 units Actual results for August are as follows: Actual output Actual variable overhead Actual fixed overhead Actual machine time 13 500 units $757 350 $274 500 29 700 machine Hours Required: Calculate the following variances, indicating whether each variance is favourable or unfavourite 1. variable overhead spending variance 2. variable overhead efficiency variance 3. fixed overhead budget variance 4. fixed overhead volume variance