the original price is "x", or 100%.
but we know that if we reduce "x" by 20%, namely 100% - 20% = 80%, the 80% of "x" is really £50, what is "x" or the 100% anyway?

 
        
             
        
        
        
There is a possibility of 24 combinations I believe
        
                    
             
        
        
        
1 mg = 0.001 grams. therefore 2000 mg = 2 grams
        
             
        
        
        
Answer:
x= 3.25
Step-by-step explanation:
4x-5=8
1. Take the -5 to the other side as a plus so now your question is
4x=13
2. to get the x by its self divide both sides by 4.
13 divided by 4 is 3.25
therefore x=3.25