Answer:
72 dogs
Explanation:
the ratio of cats to birds is 4 : 1
given there are 27 birds then the number of cats is 4 times as many, so
number of cats = 4 × 27 = 108
given ratio of cats to dogs is 3 : 2
the 3 part of the ratio is for the number of cats
divide the number of cats by 3 to find the value of one part of the ratio
108 ÷ 3 = 36 ← value of 1 part of the ratio , then
number of dogs = 2 × 36 = 72