There are 22 boys and 23 girls in class 5 (1) of experimental primary school. What is the proportion of boys to girls? What is the proportion of boys to the whole class

There are 22 boys and 23 girls in class 5 (1) of experimental primary school. What is the proportion of boys to girls? What is the proportion of boys to the whole class

22 △ 23 = 22 / 23
22 + 23 = 45
22 △ 45 = 22 / 45