Respuesta :

8 puppies
2 are black 
6 left 
t = number of tan, w = number of white
6 = t + w 
w = 2t
6 = t + 2t = 3t
t = 2
w = 2t = 2*2 = 4

first 8-2=6 so we still need to find the color of 6 of them, and if there are twice as many white than there are tan, we do 6 x 1/3= 2 (the number of tan puppies) and 6 x 2/3= 4 (the number of white puppies)