can you please give me ratio practise problems and give me the answers to them

Sure, here are some ratio practice problems:

1. In a bag of red and blue marbles, the ratio of red marbles to blue marbles is 3:4. If there are 12 red marbles, how many blue marbles are there?

Step 1: The ratio is 3:4, which means for every 3 red marbles, there are 4 blue marbles. Step 2: If 3 red marbles are equivalent to 12, then 1 red marble is equivalent to 12/3 = 4. Step 3: If 1 red marble is equivalent to 4, then 4 blue marbles are equivalent to 4*4 = 16.

Answer: There are 16 blue marbles.

2. The ratio of boys to girls in a class is 5:7. If there are 20 boys, how many girls are there?

Step 1: The ratio is 5:7, which means for every 5 boys, there are 7 girls. Step 2: If 5 boys are equivalent to 20, then 1 boy is equivalent to 20/5 = 4. Step 3: If 1 boy is equivalent to 4, then 7 girls are equivalent to 7*4 = 28.

Answer: There are 28 girls.

3. The ratio of cats to dogs in a pet shop is 2:3. If there are 18 dogs, how many cats are there?

Step 1: The ratio is 2:3, which means for every 2 cats, there are 3 dogs. Step 2: If 3 dogs are equivalent to 18, then 1 dog is equivalent to 18/3 = 6. Step 3: If 1 dog is equivalent to 6, then 2 cats are equivalent to 2*6 = 12.

Answer: There are 12 cats.