Question

A bag contains 7 white balls and some blue balls .If the probability of drawing a blue ball is three times that of a white ball , then the number of blue balls in the bag are
2 points
20
14
21
23​

Answer 1

Answer:

Blue balls are 21.

Step-by-step explanation:

if blue balls are 3 times of white balls then 3*7=21.

Answer 2

Step-by-step explanation:

Blue ball is 21 ( 3 ×7 = 21)