Mr. kole has 30 students in his class. he has twice as many girls as boys. what is the ratio of boys to total students?

1:3

Step-by-step explanation:

We are given that

Total number of students in Mr Kole's class=30

Number of girls=Twice the number of boys.

We have to find the ratio of boys to total students.

Let number of boys in the class=x

Total number of girls in the class=2x

Total students in the class=30

By using division property of equality

Number of boys in the class=10

Ratio of boys to total students=

Ratio of boys to total students=1:3

if x decreases by 4 then y increases by 10

step-by-step explanation: