Answer:
add them all up together and then divide by the number of items
Step-by-step explanation:
 
        
             
        
        
        
Answer:
12/54
Step-by-step explanation:
4x3=12
6x9=54
 
        
                    
             
        
        
        
Wouldn't it be -1 (minus one)? 12 - 1 = 11 and 9 - 1 = 8.
        
             
        
        
        
Answer:
The answer is B.
Step-by-step explanation:
 
        
                    
             
        
        
        
Step-by-step explanation:
We dimension of the smallest cube to be made from cuboids of sides 3 m , 4 m and 5 m will be the least common multiple of 3 m, 4 m and 5 m i.e. 60 m
12 cuboidal should be stacked along 5 m edge to 60 m, 15 cuboids should be stacked along 4 m edge and 20. cuboids should be stacked along edge to make a cube of 60 m edge, Hence number of cuboids are 12× 15 ×20=3600
hope it helps