Question

can someone please take a look at these i really dont know how to explain to my kids.. i will try to download them

Answer 1

take a screen shot if you can

Answer 2

let x be the amount of water in ounces at the beginning

Answer 3

For each step there will be a new equation

Answer 4

let's use the children's initials to represent how much water is remaining after a kid gets a drink

Answer 5

\[I=x-0.25x=0.75x\]

Answer 6

M=I-6

Answer 7

P=M-0.2M=0.8M

Answer 8

E=P-P/6=P*5/6

Answer 9

Y=E-0.1*E=0.9E

Answer 10

S=Y=9

Answer 11

Then all there is to do is a bunch of substitution starting with substituting "I" into M=I-6.

Answer 12

make sure that they are all in the same current, you don't want litter and ounce mess up

Answer 13

acutally not litters but the number without currency

Answer 14

my kids will be confused cause this is hard for me to explain.. there are two different questions.. sorry not math smart.. :(

Answer 15

it's ok, that's y we have this website

Answer 16

lol

Answer 17

but that person's explaining up there might screw you up, also ur kids

Answer 18

they are just in middle school.. so i need to explain it so that we all understand

Answer 19

i think it should be easy, you just keep track of the numbers and change it into fraction but 6 and 9

Answer 20

then add them up

Answer 21

ok.. 1/4 4divided into 100 0.2 not sure and 10% not sure how to change it..

Answer 22

here i got this
1/4 + 1/6 + 1/5 + 1/10 + 6 + 9 = x

Answer 23

dont the bottoms all have to match

Answer 24

20 ounces

Answer 25

The amount of water changes during each step and is much more complicated than simply adding up the amounts at each step.

Answer 26

If we work backwards we can say that 9 is 90% of what was there before Yorick drank

Answer 27

\[9=0.9*Amount before Yorick\]
\[\frac{9 }{ 0.9 }=Amount before Yorick\]
Amount before Yorick = 10

Answer 28

We can continue doing this. Now that we know the amount before Yorick we can find the amount before Elizabeth

Answer 29

Amount before Yorick=5/6*Amount before Elizabeth

Answer 30

10=5/6AmtBElizabeth
AmtBeforeElizabeth=\[\frac{ 10 }{ 5/6 }=12\]

Answer 31

so we have to work backward ?

Answer 32

its easier since we don't have to substitute all the way through

Answer 33

easier than what i was describing before, breaks the problem into smaller steps

Answer 34

yeah, i didnt realize that
it seems math is harder and harder each year

Answer 35

these types of problems are simply annoying because they can involve a lot of algebra.

Answer 36

my daughter got 1/2

Answer 37

0.5 ounces?

Answer 38

she wrote 1/2

Answer 39

ok thank you for your help.. i am so confused now. :)

Answer 40

=)) we all do

Answer 41

1/2 just doesn't make sense unless it is in a different unit

Answer 42

she is not good in math either.. she said she did it in class with other kids.. so i am not sure how this all goes

Answer 43

let's start over
go to the end of the list.
we know that stephanie ends with 9 ounces

Answer 44

and we know that the 9 ounces are 10% less than the amount before Yorick drinks

Answer 45

i think you should give her the most you can do, they she will check with friends in class

Answer 46

yes thank you.. this is way to confusing for me.. lol... i should have taken a math class during the summer to help

Answer 47

good night