Kim's age is twice that of her sister when you add kim's age to her sisters age to get 24 how old is each sister

Twelve less than a number is at most 20

Apool measures 100 meters by 100 meters a toddler inside the pool and trows a ball 60 centimeters from one edge of the pool.how far is the ball from the opposite edge of the pool

For the inequality |c| < |d| to be true, which of the following must be true?