Add an ice-skating rink there are 22 people who know how to ice skate and 18 people who do not know how to ice skate what is the ratio of people who know how to ice skate and people who do not know how to ice skate

11 : 9

Step-by-step explanation:

Data:

Let: The people who can skate = 22

       The people who do not know how to skate = 18

The ratio of the people who can skate  to people who do not know how to skate is given by:

or 11  : 9

alright so i think for this one it would to draw it out. this may be hard for me to try and draw, but i will do my best on here:

        r

  /       |     \

notice how it forms 2 triangles inside one bigger triangle.

so if we know the angle spr is the same as psr that is saying the measure of angle p is the same as angle s. this means the big triangle psr is either isosceles or equilateral. in both cases, the triangle is perfectly symmetrical when split down the middle, which is in this case rq. because we know it is perfectly symmetrical on both sides, we know that the two triangles inside the bigger one are equal.