SOLUTION: There was a jar of cookies. Katie ate half the cookies. Myron ate a third of what was left in the jar. Gina decided to take a fourth of the remaining cookies. Then nancy came and t

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: There was a jar of cookies. Katie ate half the cookies. Myron ate a third of what was left in the jar. Gina decided to take a fourth of the remaining cookies. Then nancy came and t      Log On


   



Question 809238: There was a jar of cookies. Katie ate half the cookies. Myron ate a third of what was left in the jar. Gina decided to take a fourth of the remaining cookies. Then nancy came and took a cookie to munch on. When chelsea look at the jar she saw two cookies left. How many cookies were there in the jar to begin with?
Found 2 solutions by TimothyLamb, josgarithmetic:
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
C
k = C/2
m = C/6
before gina: r
g = (1/4)r
g = (C - k - m)/4
after gina: a = 3
r = (1/4)r + 3
(4/4)r - (1/4)r = 3
(3/4)r = 3
r = 4
before gina: r = 4
---
g = 1
---
after myron: r = 4
r = (1/3)r + 4
(3/3)r - (1/3)r = 4
(2/3)r = 4
r = 6
before myron: r = 6
---
m = 2
---
after katie : r = 6
r = (1/2)r + 6
(2/2)r - (1/2)r = 6
(1/2)r = 6
r = 12
before katie: r = 12
---
k = 6
---
---
Answer:
C = 12
---
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Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
One whole jar of cookies.
1 jar.

Katie: 1-1%2F2.
Myron: %281-1%2F2%29-%281%2F3%29%281-1%2F2%29.
Gina: .
Nancy and Chelsea: 3 cookies. Think about these two people a bit before continuing.

If J = the number of cookies originally in the jar, then

The best denomination to use is forty-eighths, or as (1/48). Rewrite the entire expression for the factor on J in forty-eighths.
(So much text to use... so abbreviating... easier on paper....)

%2824-16%2B4-6%2B4-2%29%2F48
%2832-24%29%2F48
8%2F48=1%2F6

The simplified equation then is highlight%28J%2A%281%2F6%29=3%29
highlight%28highlight%28J=18%29%29, eighteen cookies were initially in the jar.