Answer:
33/5
Step-by-step explanation:
6 3/5 = 33/5
6 x 5 = 30 
30 + 3 = 33 
33/5.
 
        
                    
             
        
        
        
That equation would be ...
  distance = speed × time
  d = 670,616,629*h . . . . . distance in miles
        
                    
             
        
        
        
<em>Greetings from Brasil...</em>
The average for a set of 9 elements will be
(A + B + C + D + E + F + G + H + I) ÷ 9 = 20
Let's make (A + B + C + D + E + F + G + H + I) like S
<em>(I chose S to remember a sum)</em>
Let us think.....
S ÷ 9 = 20
S = 20 × 9
S = 180
So,  (A + B + C + D + E + F + G + H + I) = 180
According to the statement, we will include a number (element J) in the sum to obtain a mean of (20 - 4), that is:
<h3>(A + B + C + D + E + F + G + H + I + 
J) ÷ 10 = (20 - 4)</h3>
as seen above, (A + B + C + D + E + F + G + H + I) = 180, then
(180 + J) ÷ 10 = 16
(180 + J) = 160
J = 160 - 180
<h2>J = - 20</h2><h2 />
So, including the number - 20 <em>(minus 20)</em> in the original mean we will obtain a new mean whose result will be 16
 
        
             
        
        
        
When you multiply 6 by 600 it equals 3,600 
6x600=3,600
        
             
        
        
        
Just move the decimal twice to the right. So 11%