24 : 8 = 3 : 1 because 24 divided by 8 = 3 so 
3 = 1
7 : 35 = 1 : 5 because 35 divided by 7 is 5 so 
5 = 1
        
             
        
        
        
Answer: 68400
Explanation: The question is asking for area so you do base times height. In this case you multiply 360 times 190.
 
        
             
        
        
        
Answer:
The proportion is 3/4=9/12
Step-by-step explanation: For proportions you need to write it in a ratio, after doing that, you look at the outside numbers on the ratio on this case it is 3 and 12, multiply that and you get 36, after that do the same with the inside numbers to get another 36.
 
        
             
        
        
        
Each book costs $15. 90 divided by 6 is 15 which is also 90 over 6.