Answer:
60.5%
Step-by-step explanation:
60% white, 40% black
The first draw you have a 60% chance drawing a white marble, the second time you have a 55% chance since you already drew one in the first round. so i think it is 60.5%% chance drawing white on both rounds since I add 60+55=121. 121/200=60.5%
 
        
                    
             
        
        
        
Answer:
75 - 35y / 3 + 2y = -4 
( 75 - 35y + 6y ) / 3 = -4 [ Taking LCM ] 
( 75 - 29y ) / 3 = -4 
75 - 29y = -12 
29y = 75+12 
29y = 87 
y = 3 
hope that helps ✌