Question

One third of the seventy five colored tiles in a bag are blue,40% of the remaining tiles are green,and all the other are white.if one tile is selected at random,what is the probability that the selected tile will be white?

Answer 1

1/3*75 ARE BLUE

25 ARE BLUE

REMAING 75 TILES

=40/100*75

=30 ARE GREEN

25+30+WHITE MARBLES=75

55+WHITE MARBLES=75

=20

WHITE  MARBLES ARE 20

PROBABILITY =20/75=0.266666666666667

Answer 2

Find the number of blue tiles:

1/3 x 75 = 25

Find the number of green tiles:

40% of 75 = 0.4 x 75 = 30

Find the number of white tiles:

75 - 25 - 30 = 20

Find the probability of getting a white one:

P(white) = 20/75 = 4/15

Answer: The probability of getting a white one is 4/15