Assuming that each marble can be picked with equal probability, we notice that there is a total of

marbles, of which 2 are red.
So, the probability of picking a red marble is

In fact, as in any other case of (finite) equidistribution, we used the formula

Answer:
30%
Step-by-step explanation:
I believe it would be 30% chance of the person picked would be Male that has not finished the book as there is a 50% chance of male and 60% chance that they had not read it. You would multiply .5*.6 which would give you .3 and therefor you have a 30% chance that these two problems are met.
35 = red
35 : 50 = 7 : 10
the ratio is should be 7 out of 10