Managerial accounting. Thank you

At Hampton Freeze, management believes that an ending inventory equal to 20% of the next quarter's sales would be an appropriate balance. Ending inventory for Q4 is 3,000. Budgeted sales are: Q1 10,000, Q2 30,000, Q3 40,000 and Q4 20,000. Prepare a production for all 4 quarters and the year using the above information