There are 5 boys in a class of 11 student, what is the ratio of all student in the class to girls? and what is the ratio of boys to girls?

this implies there are 11-5 = 6 girls in the class.

ratio of students to girls = 11:6

ratio of boys to girls = 5:6

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

536

step-by-step explanation: