Hi im Aleida and go to calculatorsoup on Safari or google and put gcf calculatorsoup hope this helps
        
             
        
        
        
Multiply 4 * 5, which equals 20, and add the two zeroes(from 40 and 50) on the end.
That gives us:
2000
        
                    
             
        
        
        
The answer is 60. You can find this out by finding the least common multiple of 10 and 12, which is 60 because 10x6=60 and 12x5=60. Hope this helps :)
        
             
        
        
        
The maximum length is 5 . The 3 tall takes away from the 8 and then your left with 5.
        
             
        
        
        
Because the ratio for both candles is 20/60 or 1/3 then take the number of ounces the candle has and divide by 1/3. In expression: 9 / 1/3 => 9 * 3 = 18