There are 15 boys in a group of 35 students. What is the ratio of boys to girls in this group?
The number of boys in the group is 15 and there are 35 students. This gives the number of girls as 35 - 15 = 20
The ratio of the number of boys to the number of girls is 15:20 = 3:4.
The required ratio of the number of boys to the number of girls is 3:4.
Since, there are 15 boys and overall 35 students, you subtract the amount of boys and there will be 20 girls left. Now its 15/20 or 15 to 20, but simplifying that amount, you will have 3 to 4. And since you ask for the boys, it would be 4:3 in ratio format.
Well first you have to find the number of girls in the class.
so you take the number of boys from the total number of class members
35-15= 20 girls
So the ratio from boys to girls is
which can be simplified to
3:4 if we divide both sides by four
First you should subtract the boys with the overall students getting 20 girls. then it is 15/20 and the ration would be 3:4