Wilda can do the job in 4 hours ... she does 1/4 (or 0.25) of it each hour.
Karla can do it in 5 hours ... she does 1/5 (or 0.2) of it each hour.
Wilda worked alone for 1 hour ... 0.25 of the job was done before her helper 
arrived.  So only 0.75 of the job remained to be done together.
Working together, they accomplish (0.25 + 0.2) = 0.45 of the job in 1 hour.
How many times do they need to do  0.45  of the job in order to finish 
the  0.75  of it that remains ?  That's the number of hours it will take them, 
working together. 
0.75 / 0.45  =  <em>1 and 2/3</em>
After Wilda worked alone for 1 hour and Karla came along to join her, it will
take them another  <em>1 hour and 40 minutes</em> to finish the job and go for a swim.
        
             
        
        
        
The answer would be a (5) (41) hope that helped
        
             
        
        
        
Answer:
x=29 CEF=103 BEF=58
Step-by-step explanation:
161=3x+16+2x
5x=145
x=29
 
        
             
        
        
        
Actually I didn't see the (-5, -27), the answer would be -2.