Which equation can be used to find the answer? 

Dania marks off 18.7 m of a playing field for a sports festival. She needs to mark off a total of 29 m to finish the field. How many more meters does Dania have left to mark off?



 
A.
f = 29 ÷ 2 
f = 14.5 
14.5 m


 
B.
f – 18.7 = 29 
f = 47.7 
47.7 m


 
C.
f = 18.7 · 2 
f = 37.4 
37.4 m


 
D.
f + 18.7 = 29
f = 10.3 
10.3 m