Step-by-step explanation:
$75      30%      0.70(75) = x      $52.50
$18       65%      0.35(18) = x      $6.30
$60      30%      0.70x = 42        $42
$35       20%     0.80x = 28        $28
$150      25%     0.75(150) = x     $112.50
 
        
                    
             
        
        
        
There is no given data table but based on the question, the reaction is
xy <=> x + y
If we let M as the initial concentration of xy and c as the in the concentration after the dissociation, then we can use the ICE method
    xy   <=>   x    +   y
I    M
C  -c            c         c
-----------------------------
E  M-c          c         c
Solve for c using
Kc = c(c) / (M - c)
And the concentration of the xy, x, and y can then be determined
        
             
        
        
        
21) 3(2j-k)=108 It is asking you to set the equation equal to j
distribute the 3
6j-3k=108
move k to the other side by adding on both sides
6j=108+3k
divide everything by 6
j=18+0.5k
        
             
        
        
        
Answer:
each ticket = $27.75
Step-by-step explanation:
70.50-15=55.50 
55.50÷2=27.75