John has a bag of marbles that contains 12 red marbles 20 green marbles and 17 blue marbles if john pulls one marble out of the bag what is the probability that it will not be red? that is p (not red)?

what is the probability that he will draw a purple marble? that is p (purple)?

Step-by-step explanation:

We are given that the bag contains 12 red marbles, 20 green marbles and 17 blue marbles.

Total number of marbles = 12 + 20 + 17 = 49

Formula:

We have to find probability of not drawing a red marble from the bag.

First we will evaluate P(red)

Thus,

Because there are no purple marble in the bag.

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.