Question

a bag contains 15 red balls and some green balls.If proability of drawing a green ball is three times that of a red ball,determine the number of green balls in the bag.

Answer 1

Answer:

let total no. of balls =x

no. of red balls=15

no. of green balls=x-15

probability of red ball is =15/x

prob. of green ball is =x-15/x

given that...

x-15/x=3×15/x

x=60...

no. of green balls =60 -15=45...

if ans. is correct plz mark the ans. as brainliest answer...,

Answer 2

Answer:

Step-by-step explanation:

Let the total possible outcomes be 15+x

P(green ball) = 3 P(red ball)

 $\frac{x}{15+x}$ = $\frac{3* 15 }{15+x}$     (15 +x on both sides will get cancelled)

   x = 45

Therefore, no of green balls = 45

Hope this helps you!!