Help me plss Margie is 3 times older than Lilet. In 15 years, the sum of their ages is 36.Find their present ages.

I will follow the user who’s answer is appropriate.. tnx in advance❤️

You are measuring the dimensions of the floor in your bedroom because you are planning to buy new carpet. which unit of measure is the most appropriate to use in this situation?

Find the difference (8ab+a+2) - (3ab+6)

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?