(a) Compute the variable overhead spending and efficiency variances. (Round "cost per unit" and "rate per hour" answers to 2 decimal places.) AH = Actual Hours SH = Standard Hours AVR = Actual Variable Rate SVR = Standard Variable Rate Actual Variable OH Cost Flexible Budget Standard Cost (VOH Flexible Budget Standard Cont (vo 7 (b) Compute the fixed overhead spending and volume variances. (Round "cost per unit" and "rate per hour" answers to 2 decimal places.) AH = Actual Hours SH = Standard Hours AFR = Actual Fixed Rate SFR - Standard Fixed Rate Actual Fixed OH Cost Budgeted Overhead Standard Cost / 70