$36\div (1+2)=12, 12\times2=24$ 
Farmer Baar has 36 sheep, some pink and the rest white. There are twice as many pink sheep as white sheep. How many of the sheep are pink? 

A: $$10$$ 
B: $$12$$ 
C: $$20$$ 
D: $$24$$ 
E: $$30$$ 