Question

A teacher and her class perform an investigation in math class where they record the color of marbles. They pull out of the bag 50 times to predict how many marbles are in the bag. they pull 2 blue, 5 red, 8 purple, and 35 orange marbles. how many purple marbles will they find in a bag of 300

Answer 1

Number of purple marbles they will find = 48

Explanation:

Step 1:

It is given that the teacher and her class initially pull marbles out of the bag 50 times. Out of the 50 times they got purple 8 times.

Probability of getting a purple marble = (Number of purple marbles)/( Number of marbles) =
`(8)/(50)`

Step 2:

In the next step they pull marbles from a bag that has a total of 300 marbles.

Number of purple marbles = Number of marbles in the bag * Probability of getting a purple marble

Number of purple marbles = 300 * 8/50 =48

Step 3:

Answer:

Number of purple marbles they will find = 48