For a department, the standard overhead rate is Rs.2.50 per hour and the overhead allowances are as follows: Activity Level (Hours) Budgeted Overhead Allowance 3,000 Rs. 10,000 7,000 Rs.18,000 11,000 Rs.26,000 In a period, the activity level of the said department was 10,000 hours and the actual overheads incurred were Rs.22,000. Required: i) The fixed cost ii) The standard activity level on which the standard overhead rate has been fixed. iii) Budget variance iv) Idle capacity variance v) Overall variance with check (proof)