Answer:
the answer is 15:75
Step-by-step explanation:
(1+5)=6
£90/6=15
So, (1×15):(5×15) 
=15:75
 
        
             
        
        
        
First of all, you surely do have a lot of incorrect grammar in your statement. I can't understand a word that you are asking. 
 
        
             
        
        
        
Answer:
a) 19/15 b) 1/3
Step-by-step explanation:
in both the question I reduced the numbers with 5
 
        
             
        
        
        
All the answers are gotten using the lcm method 
1.8/11
2.3/23
3.1/2
4.13/15
5.8/11
6.49/30
7.22/3
8.19/60