1- if the sales in the first year equal $100, the sales in the 4th year must be equal nearly:

a $33

b $133

c $50

d $460

2- if the sales in the 4th year is equal $300, the cost of goods sold for the 4th year must be equal nearly :

a $100

b $71

c $120

d $144

3- from the data belonging to this section we can reach to the following general result:

a decrease sales ratio

b sales ratio is grow more than cost of goods sold ratio

c decrease cost of goods ratio

d sable in profit ratio