Question

A sack holds 6 red delicious apples and 9 honey crisp apples. An apple is pulled out of the sack at random and then placed back in the sack. How many times can you expect that a red delicious apple will be pulled out of the sack in 80 tries? A. 28 B. 32 C. 40 D. 53

Answer 1

6 red and 9 honey:

Total = 6 + 9  = 15.

Probability of picking red =  Number of red / Total = 6/15 = 2/5

So if we have 80 tries, number of red = Probability of red * Number of tries

=  2/5  * 80 = 32

B. 32.

Answer 2

I think is 53, but I am not sure. what I did was,
9*9-1=53.