Question

Hey plz ansr these quickly!!
I need it urgent!!
I will mark u brainly n plz ansr it correctly!!

Answer 1

No. of white balls=15

let the no. of black balls = x

probability of drawing a white ball = 15/(15+x)

probability of drawing a black ball = x/(15+x)

According to given condition-

x/(15+x)=3*15/(15+x)

x=3*15

 =45

therefore the no. of black balls = 45

Answer 2

i think it help you if yes give brainli