Answer:
20 puppies
Step-by-step explanation:
So this is a proportion, or a ratio. There are 4 puppies to 3 kittens. We can write that as
4:3
Now, we want to find out how many puppies there are if there are 15 kittens. With a ratio, we want to keep the numbers proportional, and make sure they grow or shrink by the same amount. 15 is 3 x 5. So, the number we are multiplying our whole ratio by is 5.
4:3
?:15
20:15
So, there are 20 puppies.