A sales budget is given below for one of the products manufactured by the Key Co.:

	January..................	21,000 units
	February................	36,000 units
	March....................	61,000 units
	April......................	41,000 units
	May........................	31,000 units
	June........................	25,000 units

The inventory of finished goods at the end of each month should equal 20% of the next month's sales. However, on December 31 the finished goods inventory totaled only 4,000 units.

Each unit of product requires three specialized electrical switches. Since the production of these specialized switches by Key's suppliers is sometimes irregular, the company has a policy of maintaining an ending inventory at the end of each month equal to 30% of the next month's production needs. This requirement had been met on January 1 of the current year, Jan. beginning inventory for is 21,780 switches

Prepare a budget showing the quantity of switches to be purchased each month for January, February, and March and in total for the quarter. (Hint start by calculating the units required to be produced)