Answer:
7/10
Step-by-step explanation:
In total, there are 10 marbles, in which 7 of them is already green and 3 of the rest are yellow.
In the problem, they ask us "What is the probability that the marble Mayra picks is green?" - so we're only finding the number of green marbles in the total number of the marbles in the bag.
=> there are 7 green marbles
