Question

A bag contain 15 balls,out of which some are white and some are black .If probability of drawing a black ball at random is 2/3,then find the no.of white balls

Answer 1

Answer:

Step-by-step explanation:

Let us assume that there are x black balls so p(black ball)is x/15=2/3 by cross multiply you will get x=10 .so nu of black balls are 15 minus 10 ,that is 5

Answer 2

2/3×15=10white balls