In this line of circles the ratio of red circles to blue circles is 1:3
How many more red circles would need to be added to make the ratio of red to blue 3:1?
need to be added to make the ratio of red to blue 3:1?
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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?

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school