I NEED HELP ASAP "It's too short. Write at least 20 characters to get a great answer."

she'll have 120 left. 160/120=120/120 in order to keep the same ratio I believe she'd have to sell 30 from the band posters

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: