Question

a bag contains 5 red ballls and some blue balls. if the probability of drawing a blue ball from the bag is four times that of a red ball. find the no. of blue balls in the bag

Answer 1

Step-by-step explanation:

P(blue ball)=X/X+5

P(red ball)=5/X+5

P(b)=4P(r)

x/X+5=4(5)/X+5

x=20

Number of blue balls in the bag=20

Answer 2

Answer:

There are 20 blue balls.

Hope it helps.