cost and accounting2?

Individual assignment: Cost and management accounting II
submission date: Final exam date of the course
Required Accuracy:100%
In July ABC trading instrumentation inc. of Addis Ababa operand a subsidiary in Kenya to distribute its products in east Africa. You have been employed as management accountant in the subsidiary with the primary task of implementing financial controls on its activities.
Investigation of the sales position reveals:

Forecast sales quantity Birr 20 per unit            October--------- 30000
                                                  November----- 30000
                                                  December-------20000
Although 90 percent of sales are on a credit basis, early collection experience indicates that 80 percent of the credit sales are settled the month after invoicing, with the balance cleared in the following month. The customers are Mainly government agencies and health authorities; so there is little likelihood of bad debts.
The subsidiary buys all its products from the parent company in Addis Ababa. It has been decided that its purchasing policy will be geared towards acquiring sufficient inventory in one month to fed the following months sales. All purchases are to be settled in the month after purchase. Gross margins are budgeted to be 40 percent on sales.
Monthly fixed costs amount to $40,000, inclusive of $2000 in depreciation. In addition, basic salary costs will be $35,000 per month, plus commission of 10 percent on sales. Other variable selling costs will amount to  5 percent of sales value. All of the foregoing costs will be paid in the month of incurrence.
Required prepare: 5 points each
Sales budget
Cash collection budget
Purchase budget
Selling and administrative expense budget