Question

Noah drew 18 hearts, 3 stars, and 8 circles.What is the ratio of stars to all shapes?

Answer 1

The total number of shapes is 29

the ratio is 3:29

Answer 2

So you want to add all the shapes first. 18+3+8=29
So that's the total. Then the number of stars is 3. 
So the ratio of stars to all shapes is 3:29.