66. Animals: The label on a bottle of pet vitamins lists dosage guidelines. What dosage would you give to each of these animals?
(a) a 18 kg adult dog
(b) a 6 kg cat
(c) a 18 kg pregnant dog
(a) 1 tsp
(b) \(1\dfrac{1}{2}\) tsp
(c) 2 tsp
(a) Adult dog: \(18/9=2\) half-teaspoons → \(2\times\dfrac{1}{2}=1\) tsp.
(b) Cat: \(6\times\dfrac{1}{4}=\dfrac{6}{4}=1\tfrac{1}{2}\) tsp.
(c) Pregnant: \(18/4.5=4\) half-teaspoons → \(4\times\dfrac{1}{2}=2\) tsp.