Question

A bag contains 30 marbles, 3 of which are blue, 20 are red, 5 are green, and 2 are purple. Emerson takes a marble out of the bag, records the color, and returns it to the bag. How many purple marbles should he expect after 300 trials?

20
30
50
200

Answer 1

A) 20

if there are 30 marbles than 30 x 10 = 300. so you would do the same with the purple marbles 20 x 10 = 20.

Answer 2

but about 20. 2 x 10 since there are 30 marbles, so it makes sense to say 30 x 10 to get 300, but since you only have 2 purple, you only get 2 purple out of every 30,

SO in conclusion, 20 purple marbles.

Step-by-step explanation: