Which equation can be used to find the answer?

Usman paints the entire length of a fence in a day. He paints the last 12 m of the 38 m fence in the afternoon. How many meters of the fence does he paint in the morning?

A.

f = 38 ÷ 2

f = 19

19 m

B.

f – 12 = 38

f = 50

50 m

C.

f = 12 · 2

f = 24

24 m

D.

f + 12 = 38

f = 26

26 m

Question

Which equation can be used to find the answer? 

Usman paints the entire length of a fence in a day. He paints the last 12 m of the 38 m fence in the afternoon. How many meters of the fence does he paint in the morning?
  
 
 

 
 

  

  A. 
 
f = 38 ÷ 2 

f = 19 

19 m
   
   

 
 

  

  B. 
 
f – 12 = 38 

f = 50 

50 m
   
   

 
 

  

  C. 
 
f = 12 · 2

f = 24 

24 m
   
   

 
 

  

  D. 
 
f + 12 = 38 

f = 26 

26 m