the base must be raised
for example
 55 = n ( the base is 10 ), then
 55 = n ( the base is 10 ), then
55 = 
 
        
             
        
        
        
67.27 
155 = 1.55 x 43.4 = 67.27
 
        
                    
             
        
        
        
Answer:
20 and 25.
Step-by-step explanation:
Given:
They both teach total 45 yoga classes each week.
Erica teaches 15 fewer than twice as many as Bo.
To find:
How many classes does each instructor teach per week  = ?
Solution:
Let number of classes are taken by Bo = 
Then number of classes are taken by Erica =  (given)
  (given)
Total number of classes are taken by both = 45           (given)
According to the question.
 +
 +  = 45
 = 45

By adding both side by 15

By dividing both side by 3

number of classes are taken by Bo =  = 20
 = 20
number of classes are taken by Erica = 
                                                                = 
Therefore, number of classes are taken by Bo and  Erica is 20 and 25.
 
        
             
        
        
        
Answer:
0.04326
Step-by-step explanation: