Answer:
The last one: 25%
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 1 : 1.48
Step-by-step explanation:
Adam was able to change £400 into 592 francs which means that the British pound is stronger because it was able to buy more Swiss francs. 
The exchange rate can be gotten using direct proportion:
400 : 592
1       : x
Cross multiply:
400x = 592
x = 592/400
x = 1.48
Exchange rate is:
= 1 : 1.48
 
        
             
        
        
        
6    3
    ------
    250
ignore this sentence
        
                    
             
        
        
        
The LCD for 1/8 and 2/3 is 24 sorry if im wrong