You can obtain the a number for which they all divisors by calculating the least common multiple.
This way:
85 = 5*17*1
17=17*1
19=19*1
4=2^2 *1
2=2*1
The least common multiple is: 5*17*19*2^2 = 6,460.
Then 84, 17, 19, 4 and 2 are all divisors of 6,460. 
        
             
        
        
        
Answer:
7 1/2+ 7 1/2=146 of 146 Kerry and Eric ran the same amount each
 
        
             
        
        
        
Answer: the correct answer is A. :-)
Step-by-step explanation:
4/9 divided by 4 is 1/9.
 
        
                    
             
        
        
        
Answer:
225
Step-by-step explanation:
So we know that 20% of the social workers he surveyed was 45 people. The easiest way to find all 100% of the social workers is to do 45 x 5 because 20% x 5 = 100%. So 45 x 5 = 225.
Hope this helped! :)