Question

A box contains 100 colored chips; some are yellow and some are green. John chooses a chip at random, records the color, and places it back in the bag. John has recorded 57 yellow chips and 19 green chips. Using these results, what is the predicted number of green chips in the box?


@sammsn8801

Answer 1

@samman8801

Answer 2

@RebeccaPink6398

Answer 3

@itsbribro

Answer 4

WILL FAN AND MEDAL

Answer 5

so 43?
@samman8801

Answer 6

the answer choices are
25
43
76
81

Answer 7

@samman8801

Answer 8

@RebeccaPink6398

Answer 9

I think @amistre64 Would be a much bigger help then me, He helped me earlier, im sure he will help you

Answer 10

@amistre64 please help

Answer 11

Because im not even positive If I did it right and I dont want you to get the answer wrong

Answer 12

tell me what you think it is and thats nice that you dont want me to get it wrong!

Answer 13

@samman8801

Answer 14

what would we expect from the ratio we have already?

Answer 15

im not sure @amistre64 i suck at math lol

Answer 16

im not sure isnt a valid answer, it comes across as lazy ... what have been your attempts?

Answer 17

i think its 43 but i dont know and i wanna get it right @amistre64

Answer 18

well, tell me why you think its 43, what process led you there?

Answer 19

What I wanted to do was add the numbers you had and subtract it by 100 but I got 24 and Ya I wasnt sure either

Answer 20

i subtracted 57 from 100 and got 43 @amistre64

Answer 21

adding is close, its a good direction, but a ratio is scaled

57 to 19 is our expected ratio

57k + 19k = 100 is our expected total of chips.

Answer 22

the answer choices are
43
25
76
81
@amistre64

Answer 23

lets say we actually have 10 yellow and 30 green

our ratio is 1 to 3

1k + 3k = 40, what is k?

Answer 24

10?

Answer 25

right, so our process is valid

57k + 19k = 100

what is k?

Answer 26

well i dont really understand because lets say k was 10 and you multiply 57 by 10 you pass 100 by a lot

Answer 27

maybe k could be 2? @amistre64

Answer 28

dont mix the example with the actual problem

the example shows a process that can be validated.

work the same process

Answer 29

so maybe k could be 2 or 1?

Answer 30

57k + 19k = 100

(57+19)k = 100

k = 100/76

so 19k is the number of green we would expect in the bag from the given ratio

19*100/76 is?

Answer 31

43 or 24. I got them both @amistre64

Answer 32

you cant get both of them from 19*100/76, its only one value.

Answer 33

i got 43! A

Answer 34

well, i dont agree with it, but good luck with it

Answer 35

can we move onto another one? i got the answer for this next one but since your like super smart can you correct it?

Answer 36

A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The probability of the arrow landing on a section colored red is 9 over 20. The probability of the arrow landing on a section colored blue is 6 over 20. What is the probability of the arrow landing on a green-colored section?

15 over 20
11 over 20
6 over 20
5 over 20

Answer 37

i got d @amistre64

Answer 38

how did you come to d? this is a study site, so method is important.

Answer 39

ok so i looked at the fractions and i had done an exact problem like it before and 5 over 20 was the answer. but now that i look at it again i think it could be another one @amistre64

Answer 40

red + blue + green = some amount

we arent given the actual amount, but its save to say we can compare it to 20

9 of which are red, 6 of which are blue

9 + 6 + green = 20

green = 20 - 9 - 6

Answer 41

we would expect 5 out of 20 is fine

Answer 42

thank you! mind helping with more? @amistre64 you are a life saver

Answer 43

in a new post, sure. this one is lagging my computer due to its length