Question

You draw a marble from a bag of 120 marbles, you chart the color a replace it. estimate the number of marble in the bag that are:
-yellow
-red
-green
by using this information

How many time been drawn
Y-3
R-7
G-5

Answer 1

Well stated =D

Answer 2

=)

Answer 3

What I'd do is I'd think about how many times I've drawn a marble TOTAL. Then I'd think about how many times I've drawn a specific color. Then I'd guess that the color was that fraction of the whole bag.

Answer 4

For example, imagine I have 20 marbles total in a bag. I draw 4 and I get a red marble once. I can guess that red is 1/4th of the bag, meaning there are 5 red marbles.

Answer 5

ok so how would i do it with 120 marbles

Answer 6

You drew:
y-3
r-7
g-5
let's think about trying to guess how many greens are in the bag. Of the marbles that I drew, what fraction were green?

Answer 7

5/15 right?

Answer 8

@SmoothMath

Answer 9

Right. Which is the same as 1/3. So if you pulled 1/3 greens, just assume that 1/3 of the 120 marble bag is greens. How many is that?

Answer 10

um...

Answer 11

\[\approx\]33%

Answer 12

soooo
40

Answer 13

Yes =D

Answer 14

Try the other 2 colors on your own and tell me what you get.

Answer 15

yayyyy

Answer 16

hmmm for y i get 24 but for red its 7/15 so now what @SmoothMath

Answer 17

..

Answer 18

@SmoothMath

Answer 19

120* (7/15)