Kim's age is twice that of her sister. when you add kim's age to her sister's age, you get 36. how old is each sister?

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

Walter is to make cookies for a basketball tournament. he's made 15 cookies so far. his coach asked him to make at least 20 cookies but no more than 55. solve the inequality and interpret the solution. 20 ? x + 15 ? 55

Find 63% of 77. a. 0.485 b. 48.5 c.0.818 d.81.8