(See attached file for full problem description) only the first 3 problems:
187. The store policy is that items not sold in one month are reduced 10% in price. Product X costs you $30.00 when you purchase 50. During the first month you sell 20 units of product X at $50.00; the remaining 30 are sold in the second month. What is total profit obtained from the 50 units of product X.
188. Based on the following monthly price and volume data, which price yields the highest percentage profit for product X if product X costs you $1.00 per unit?
189. At the beginning of the week the bank account balance was $9,821.40 and during the week the following transactions were made. What should be the balance be at the end of the week?
The solution shows how to calculate the profit of product.