Question

A bag contains five red balls and some blue balls if the probability of drawing a blue ball is double that of the red ball determine the number of blue balls in the bag

Answer 1

Answer:

Step-by-step explanation:

Let the total number of balls in the bag be x

Red balls=5

Blue balls=x-5

Let R be the event

p (R)=n(R)÷n (S)

p (R)=5÷x ............. 1

Let B be the event

p (B)=n (B)÷n (S)

p (B)=2×(5÷x)

p (B)=10÷x ............ 2

1 + 2

(5÷x)+(10÷x)=1

"1" is because of possible event

(15÷x)=1

15=x