1 answer
(click or scroll down)
The probability that Nicole will pull a red marble out of the bowl is 12/120, which simplifies to 1/10. This means that out of every 10 marbles she could choose, one of them will be red.
To find this probability, I divided the number of red marbles (10) by the total number of marbles in the bowl (120) because that's the definition of probability - the chances of an event happening divided by all possible outcomes. So, the probability of Nicole pulling a red marble is 1/10.