Tbh idk but try using photo math it works
        
                    
             
        
        
        
Answer:
b
Step-by-step explanation:
 
        
             
        
        
        
Answer:
16
Step-by-step explanation:
The mean of a group of values is calculated as
mean = 
Given 5 numbers with a mean of 12, then
 = 12 ( multiply both sides by 5 )
 = 12 ( multiply both sides by 5 )
sum = 60
let the number removed be x , then
 = 11 ( multiply both sides by 4 )
 = 11 ( multiply both sides by 4 )
60 - x = 44 ( subtract 60 from both sides )
- x = - 16 ( multiply both sides by - 1 )
x = 16
The number removed was 16
 
        
             
        
        
        
Answer:
1133.3 liters of water after leakage. 
Step-by-step explanation:
x*.30=340
x=340/.30
x=1133.33