Question

Ratios and Equations
Jim spent $51on 3 CD's. At this rate, how much would 8 CD's cost?

Answer 1

51 /3 = x / 8

Answer 2

\[\frac{ 8 }{ 3 } \times \]

Answer 3

51

Answer 4

and that gives you?

Answer 5

not understanding

Answer 6

which part?

Answer 7

divide 51 by 3. that gives you the unit rate

Answer 8

that is 17

Answer 9

51/3 = 17

Answer 10

If you then take 17 and multiply it by 8 you will get your answer.

Answer 11

so its 51/3=17/8

Answer 12

no

Answer 13

it is 17 x 8

Answer 14

136

Answer 15

What does that give you?

Answer 16

Yes

Answer 17

Good for you!

Answer 18

the book is giving me a weird way to do it

Answer 19

I am sure. but if you break it down to a table and list the equivalent fractions or ratios, you will see I am right

Answer 20

it is telling me to either multiply or divide with arrows from numerator to numerator and denominator to denominator

Answer 21

Okay. Hold on a sec. I can help with that too

Answer 22

my dad did it your way

Answer 23

he calls it new math

Answer 24

It would be 51 x 8 divided by 3

Answer 25

just follow jstdandy way...
ITS the easiest possible way im pretty sure

Answer 26

the way in your book is just to make you understand the question easier

Answer 27

This new math is fun isn't it? lol

Answer 28

my dad is pulling out his hair

Answer 29

I am sure. If you have more of these type of problems Here are the steps to follow

Answer 30

thank you for your help

Answer 31

i have a bunch

Answer 32

Take your complete fraction and set it side by side with your incomplete fradtion

Answer 33

51/3 = x/8

Answer 34

If your incomplete fraction has only a denominator, multiply the incomplete fractions denominator by the complete fractions numerator and divide by the complete fractions denominator. That will be the missing numerator.

Answer 35

If your incomplete fraction has only a numerator, multiply the incomplete numerator by the denominator of the complete fraction and divide by the denominator of the complete fraction. That will give you your missing denominator.

Answer 36

im still lost in setting it up. what goes over what?

Answer 37

sorry :(

Answer 38

Story problems?

Answer 39

yes

Answer 40

ok. Take the known information and make it a fraction. Like your first one said $51 for 3 cd's = 51/3

Answer 41

Jim spent $51 on 3 CD's. At this rate, how much would 8 CD's cost?
51/3 = x/8

Answer 42

because you needed to find the cost for 8 cd's your second fraction is ?/8

Answer 43

ok

Answer 44

You need to find the the number to replace the ?

Answer 45

right

Answer 46

Set the others up the same way.
What you know in a fraction

Answer 47

but the ? becomes....136?

Answer 48

Yes. it is the cost
so, this problem was cost over quantity
cost/quantity
Your other problems with have similar information

Answer 49

so it would look like: 51/3=136/8

Answer 50

x=17

Answer 51

YES! nice job! I feel bad, but I will have to check back with you. I need run an errand.

Answer 52

Yes!

Answer 53

no problem. thank you for your help

Answer 54

Wait, no. x=136

Answer 55

oh, ok :)))))))