Question

Teri and Jennifer have 480 holiday cookies altogether. Teri has 1 23 as many cookies as Jennifer. How many cookies does Jennifer have?

Answer 1

how much has tery?

Answer 2

1 and 2/3 as many cookies as jennifer

Answer 3

Write down what we know first..

Jennifer has J cookies
Terry has j times 1.667 cookies (or 3/3 + 2/3 = 5/3)

together they have J + J(5/3) = 480 cookies

Solve for J. Show me.

Answer 4

480/5/3?

Answer 5

=32

Answer 6

No

Answer 7

but you have to have get j by yourself

Answer 8

check your answer 32 + 32(1.667) is not equal to 480

Answer 9

oh. i did that completely wrong

Answer 10

32 + 32(1.667) is not equal to 480 equals 85.333 cookies

Answer 11

Yes you did do it completely wrong, but you were right in that you need to get the J by itself. Show me

Answer 12

do you do the reciprocal of the 5/3?

Answer 13

1 over 5/3.

1 / (5/3)

which is 3/5

Answer 14

I'm so confused

Answer 15

It's an invert kind of thing, like the reciprocal of 2 is 1/2.

Answer 16

I'd let j=number of cookies belonging to Jenn, and t=number belonging to Teri.

Then t = 1.67 j, or t= (5/3) J, or t = (1 2/3)*j.

What would the sum of t and j equal, and why?

Answer 17

I'm still confused

Answer 18

I'm sorry :(

Answer 19

j + t = 480

J + J (5/3) = 480

Solve for j. How can you isolate the J ?

It is confusing at the beginning just hang in there.

Answer 20

do 3/5 on both sides?

Answer 21

J=# of coookies Jenn has
t=(5/3)j=# of cookies Teri has
480=total number of cookies the girls have
If you add t and j together, what does that sum represent?

Can you eliminate one of the variables, either t or j?

Answer 22

What?

Answer 23

RetirEEd wrote the following:

j + t = 480

J + J (5/3) = 480

Solve for j. How can you isolate the J ?

this is precisely what I was recommending. See if you can find the value of j. Once you have j, find t.

Answer 24

you take the reciprocal of the 5/3 correct?

Answer 25

No

Answer 26

do you multiply the 5/3 to 480

Answer 27

is it 320 for teri

Answer 28

No. What you do to one side of the equation you have to do to the other side. if you multiply 5/3 to 480 you have to multiply it to the J + J (5/3). And that won't isolate the J.

Answer 29

Show me the work first, isolate the J. And tell you if it is right.

Answer 30

If you want me to get the js by themselves don't I have to do the reciprocal? Cause thats the only way i know how to get the J by itself

Answer 31

j = # cookies Jennifer owns
t= # cookies teri owns = (5/3)j
j+t=j + (5/3)j =480 cookies, total.

Solve for j. then find t.

Answer 32

mathmale

technically they only asked for the number of cookies Jennifer has.

Answer 33

I still don't understand what I'm supposed to do if i can't do the reciprocal

Answer 34

but it is good to solve for both and add them together to check your answers

Answer 35

Last clue.......

The left hand equation has a J in both terms. Factor out the Js and divide both sides by the what is left in the parenthesis.

Have a good night. Time to watch my Cowboys loose.