What is the probability of pulling a red marble out of a jar of marbles that have 10 green
marbles, 7 red marbles and 3 blue marbles?

7/13

Which is 53.85% chance of picking a Red marble

Step-by-step explanation:

You would put this as a ratio of 7/13

Because you have 7 red marbles and that is the color you want to pick

You have 10 green marbles and 3 blue marbles, giving you 13 of the colors you dont want to pick

so, converting firstly the mixed fractions to improper fractions and then "adding".

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet