Question

Is my answer correct?? If it is not may you please tell me why?

Which ratio forms a proportion with fifteen over eighteen?

three over five

thirty over thirty-two

five over six

four over six

Answer 1

My answer is B

Answer 2

But then again, I'm not very good with proportions. :/

Answer 3

Should totally like use a calculator

Answer 4

cause lazy

Answer 5

Omfg xD Batman.

Answer 6

Or do long division that's always fun

Answer 7

Can you direct me towards an online calculator that does proportions then? LOL

Answer 8

Ok first let me ask you...do you know what a proportion is? :P

Answer 9

Kind of, a little bit.

Answer 10

Basically asking you, what other fraction is the same as 15/18 using fancy terms.

Answer 11

OHH

Answer 12

Yeahhhhhhhh

Answer 13

Ikr

Answer 14

How do I find that out using boring long division?

Answer 15

You can or calculator

Answer 16

It's c

Answer 17

Dude man...

Answer 18

Thanks @harryz but I need to learn how to do it my self ;-; I might not have a calculator on a test.

Answer 19

Yeah then I guess just do long division haha.

Answer 20

ahaannn nice @Cydney_Morgan

Answer 21

Cause if you do 15/18 = 0.833 or something, then just do long division with other stuff and you'll see...

Answer 22

Do you know fractions?

Answer 23

Yes ^^

Answer 24

And how to reduce them?

Answer 25

Uh, no. :c

Answer 26

There's like 50 ways to do this, but I like long division :D

Answer 27

15:18 is the same as15/18 right?

Answer 28

Yep!

Answer 29

So when you reduce the fraction 15/18 you have to divide the numerator and the denominator by a number

Answer 30

but what number?

Answer 31

And that number is 3

Answer 32

Yoooo how many times does 3 go into your fraction

Answer 33

Damn it

Answer 34

But why is it 3?

Answer 35

So 15/3=5 and 18/3=6 so the answer is 15/18 simplified, 5/6

Answer 36

Because 3 is the LCMs of both numbers

Answer 37

OHH Ok I get it.

Answer 38

Can you give me an example problem to do by my self to 'mini' test me??

Answer 39

Medal and fan?

Answer 40

Ok

Answer 41

*psssttt give a medal to @iambatman for me?*

Answer 42

Ok

Answer 43

\[\frac{ 21 }{ 35 } = \frac{ 9 }{ 15 }\] is this proportional @Cydney_Morgan and 3 isn't LCM.

Answer 44

Oh yes sorry 3 is the gift not the lcm

Answer 45

Wait what?

Answer 46

Gcf

Answer 47

Great common factor

Answer 48

^.^

Answer 49

So cydney do you want me to give you a problem

Answer 50

Um, hold on, Let me solve batmans first and then you can? ^-^

Answer 51

Wait, so I have to find the lowest common denominator which means I have to divide?? But what do I divide??

Answer 52

You have to find a common number between the numerator and denominator

Answer 53

So 9 and 15 are your numbers

Answer 54

Oh Ok.

Answer 55

What's a number that both 9 and 15 can divide with no remainder?

Answer 56

Um.. 45?? o-O

Answer 57

No

Answer 58

Why not??

Answer 59

Do you know the difference between a multiple and a factor?

Answer 60

No.. >.<

Answer 61

Ok so multiples are exactly what they sound like you have to multiply the number that you are using to find its multiples

Answer 62

So whats a Factor then?

Answer 63

You just found a common multiple of 9 and 15

Answer 64

OH thats what 45 was?

Answer 65

YES! You got itYou have to find a factor a factor is when you DIVIDE the number by lower numbers

Answer 66

OHHH So I would 15 divided by 9??

Answer 67

No

Answer 68

oh.

Answer 69

You have to divide them separately

Answer 70

By the same number

Answer 71

But whats the same number I would divide them by??

Answer 72

You try it out

Answer 73

I know, but how do I find out that number?? o-O

Answer 74

Just start from 1 and go up

Answer 75

Ok

Answer 76

Is 2 possible?

Answer 77

um,no.

15 divided by 2 is 7.5

Answer 78

Correct!

Answer 79

How about 3?

Answer 80

Yeah! :D You get 5

Answer 81

Good job!

Answer 82

but 9 divided by 3 is 1

Answer 83

Because 9/3=3 not 1

Answer 84

But my calculator says it is..

Answer 85

Ugh let me try a better one hold on.

Answer 86

Sorry I probably sound REALLY stupid right now.

Answer 87

And even if it was it wouldn't matter cause you can still divide it by the same number without a remainder

Answer 88

OMG I'm sorry!! 9 Divided by 3 is 3! Ugh I'm so sorry, It's 2:30 in the morning I am sooo sorry.

Answer 89

And you are right, I see :D

Answer 90

Oh it's 1:21AM over here!

Answer 91

3/5

Answer 92

Correct

Answer 93

So I get it now! Can you give me one more example problem?

Answer 94

8/24

Answer 95

Do this one by yourself

Answer 96

Is it 2?

Answer 97

No the answer has to be a fraction