Answer:
60 books in one bookcase
12 books in one shelf 
plz mark brainliest 
Step-by-step explanation:
figures is one bookshelf =240/4
figures in each shelf=240/4*5
 
        
             
        
        
        
Answer:
the correct answer is 19
Step-by-step explanation:
I just took the quiz
 
        
             
        
        
        
Answer:
27
Step-by-step explanation:
green is 30%
blue is 50%
red is 6 marbles which when calculated is equal to 20%
blue would then be 15 marbles as the whole 100% would equal to 30 marbles
if 40% is added which is also 12 marbles then 15+12 = 27
 
        
             
        
        
        
Number 21 would be 6 39/40