Answer and explanation:
check the attached file for a well formatted answer
The purchase budget for the month of Mar 2012 is asked. Also there are no changes in beginning and closing inventories. The data given is summarised as below, 
 
Brand 1 Brand 2 
Bottle size 2 lit 2 lit 
Number of bottles 106000 81000 
Concentrate cost $85 per pound 
Concentrate used 0.15 lb per 100 lit 0.2 lb per 100 lit 
Carbonated water used 2 lit 2 lit 
Bottle cost $0.1 per bottle 
Carbonated water cost $0.08 per litre 
Based on this the budget is filled as below, 
 
CONCENTRATE 2-LITRE BOTTLES CARBONATED WATER 
Brand 1 (A) 
318 lbs 
 
[=106000*2/100*0.15 lbs] 
 
106000 bottles 
212000 litres 
 
[106000 bottles * 2 litres] 
 
Brand 2 (B) 
324 lbs 
 
[=81000*2/100*0.2 lbs] 
 
81000 bottles 
162000 
 
[81000 bottles * 2 litres] 
 
Total Materials (C=A+B) 642 lbs 187000 bottles 374000 litres 
Direct materials unit price (D) $ 85 $ 0.1 $ 0.08 
Total direct materials to be purchased (E=C*D) $54570 $18700 $29920