A bag held 3 red marbles, 1 blue marble, and 4 yellow marbles. Lee drew a red marble and did not replace it. What is the probability of drawing a yellow marble next?

Pr= ways/choices= 4/(2+1+4)

To find the probability of drawing a yellow marble next, we need to know the total number of marbles remaining after Lee drew a red marble. Since Lee did not replace the red marble, there are now a total of 7 marbles left in the bag (2 red marbles, 1 blue marble, and 4 yellow marbles).

The probability of drawing a yellow marble can be calculated by dividing the number of favorable outcomes (drawing a yellow marble) by the total number of possible outcomes.

So, the probability of drawing a yellow marble next is calculated as follows:

Number of yellow marbles / Total number of marbles
= 4 yellow marbles / 7 total marbles

Therefore, the probability of drawing a yellow marble next is 4/7 or approximately 0.57 (rounded to two decimal places).