Question

A bag contains 15 balls of which some are white and others are red. If the probability
of drawing a red ball is twice that of a white ball, find the number of white balls in
the bag​

Answer 1

Answer:10

Step-by-step explanation:

total=15

Number of red ball = x

Number of white ball = 15-x

According to question,

X/15 =2(15-x)/15

X/15=30-2x/15

15(30-2x)=15x

450-30x=15x

450=15x+30x

450=45x

X=450/45

X=10