Answer:
Sales will be equal to 8900 gallons
Step-by-step explanation:
We have given hardware purchased = 8400 gallons
The store had 3200 gallons on hand at the beginning of the of march
So opening stock = 3200 gallons
And expected to have 2700 gallons at the end of march
So closing stock = 2700 gallons
So sales = purchases + opening stock - closing stock = 8400 + 3200 - 2700 = 8900 gallons
So sales will be equal to 8900 gallons