The portfolio beta would simply be the summation of the
weighted average of each beta. 
Where weighted average of each beta is calculated as:
Stock weighted average = Stock proportion * Individual
beta
Therefore,
Stock A beta weighted average = 0.2 * 0.4 = 0.08
Stock B beta weighted average = 0.3 * 1.2 = 0.36
Stock C beta weighted average = 0.25 * 2.5 = 0.625
Stock D beta weighted average = 0.25 * 1.75 = 0.4375
The summation of all betas yield the overall portfolio
beta:
Portfolio beta = 0.08 + 0.36 + 0.625 + 0.4375 
<span>Portfolio beta = 1.5025 ~ 1.5</span>
 
        
             
        
        
        
Answer:C. Product-market diversification strategy
Explanation: Product-market diversification strategy is a business strategy where a company invests in different product lines like FOOD,MEDICALS, ENGINEERING,CEMENT etc and in different markets. This will make the Business organisation to be very versatile and able to over come certain harsh economic conditions. Many international and multinational companies have pursued this strategy to enhance their overall business growth and development.
 
        
             
        
        
        
Answer:
B) Inventory turnover ratios
Explanation:
Inventory turnover measures how many times a business sells and replaces its merchandise or materials inventory during an accounting period, usually a year. 
One of the basic goals of JIT is to lower the total inventories in a company, therefore increasing the inventory turnover ratio. This reduces the company's operating costs.