Answer:
4 quarters
4 nickels
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
x=3.5
Step-by-step explanation:
We can use proportions to solve this problem.  Put the side of one triangle over the same side of the other triangle.
6           4.2
------ = ----------
5           x
Using cross products
6x = 5*4.2
6x =21
Divide by 6
6x/6 = 21/6
x=3.5
 
        
             
        
        
        
Out of a single week it's 2/7. Out of a month it'd be 8/30 with only 30 days in a month. I hope this helps.
        
                    
             
        
        
        
Part a: 30 gallons (i think)
part b: 220
        
             
        
        
        
You need to divide 25.4 and 4 and you'll get 6.35