Answer:
total profit gained = 20%
Step-by-step explanation:
profit = SP - CP = 18 - 15 = 3 naira
total profit percentage =
 
-  ( profit / CP ) × 100
-  3 / 15 × 100
- 20%
hence her total percentage gain was 20%
 
        
             
        
        
        
Answer:240
Step-by-step explanation: Either multiply 400 by 6/10 or .6. Either way you get 240.
 
        
                    
             
        
        
        
It should be 14/12 or 1 and 1/6
        
                    
             
        
        
        
Answer:  1 1/8 or 9/8
Step-by-step explanation:
5 1/2-4 3/8= 1/ 1/8
 
        
             
        
        
        
Answer:
in this problem we do a comparison case t i.e if 1/12 he writes 1/6 of page what about 1 page
      1/12minute  =   1/6
       ?    ×    1          then we cross multiply
(1*1/12)    ÷  1/6     =1/12*6  =  1/2 minute