All Answers

$${\frac{{\mathtt{2.7}}}{{\mathtt{0.007\: \!5}}}} = {\mathtt{360}}$$

GuestMay 1, 2015

+1693

The sum of numbers from 0 ==> 9 is divisible by 9;

0+1+2+3+4+5+6+7+8+9 = 45 45 / 9 = 5

Let's take year 1776;

1776-21=1755 1755/9=195

This is true for all multi digit numbers starting with # 10;

10-1=9 9/9=1

78-15=63 63/9=7

358-16=342 342/9=38

486,372,103 - 34 = 486,372,069 486,372,069 / 9 = 54,041,341

The question is: Why is this so?

I don't have the right answer to this question, but what I see from these examples is that the #9 has a 'special' place in a structure of multi digit numbers.

civonamzukMay 1, 2015

+118723

Thanks Titanium but you posted in the wrong spot

these were my words!

If anyone wants to answer that is fine but please do so on the original thread which is here

http://web2.0calc.com/questions/percentage_25

MelodyMay 1, 2015

+2973

hi guys!

heather is too focused on finding her future self while listening to boring Adolf H****r documentaries (her father's German)

anyways, i can tell what we need to know from the problem and get us started:

Monday-

-there are 24 more 10 cent coins than 50 cent coins

Tuesday-

-3/5 of Monday's 10 cent coins have been spent

-1/4 of Monday's 20 cent coins have been spent

-18 of Monday's 50 cent coins have been spent

-the amount of 10 cent coins and 20 cent coins are equal now after they've been spent

-all the remaining 50 cent coins make up 40% of all remaining coins

okay, we know what we need to know....

the tricky part here is creating an equation

i might come up with one tomorrow, but i know this is one where we need a variable....

uh, this is tricky, we need mellie and MathGod to come over!

in the meantime, I must study with my prototype to crunch some numbers

TitaniumRomeMay 1, 2015

$${\mathtt{40}} = {\mathtt{4}}{n}{\mathtt{\,-\,}}{\mathtt{1}} \Rightarrow {\mathtt{n}} = {\frac{{\mathtt{41}}}{{\mathtt{4}}}} \Rightarrow {\mathtt{n}} = {\mathtt{10.25}}$$

the first angle is 50 degrees. For the two angles to be complementary, the other must be 40 degrees. Therefore I used the formula above to come to the answer 10.25

GuestMay 1, 2015

+118723

Maybe

$${\frac{{\mathtt{0.5}}}{{\mathtt{254}}}}{\mathtt{\,\times\,}}{\mathtt{100}} = {\frac{{\mathtt{25}}}{{\mathtt{127}}}} = {\mathtt{0.196\: \!850\: \!393\: \!700\: \!787\: \!4}}$$ percent

0.2% error

MelodyMay 1, 2015

+118723

(4/9)*(3/8) = (1/3)*(1/2) = 1/6

That is is the PROBABILITY (not possibility)

MelodyMay 1, 2015

+906

i refuse to accept the fact that Heather feather is actually me from the future

HeatherFMay 1, 2015

+118723

A repost is here

http://web2.0calc.com/questions/percentage-can-use-a-easier-method-as-i-am-a-primary-student-teacher-will-not-believe-if-my-method-is-too-difficult

MelodyMay 1, 2015

+118723

This is a repost.

You are encourged to ask this but please follow the rules for reposting

http://web2.0calc.com/questions/instructions-on-reposting_1

If anyone wants to answer that is fine but please do so on the original thread which is here

http://web2.0calc.com/questions/percentage_25

You can leave a note here saying that you have answered on the original thread.

That would be great.

Thank you :)

As for me - it was a really confusing question.

No other method comes to mind easily.

Some of the younger members may be able to think of something as their minds are not so trained in algebra as mine is SO it might be easier for them to think laterally :)

Why don't you ask Mellie, she is both young and brilliant.

MathsGod1 might also like to be invited to have a go.

Maybe I should challenge other youngsters too e.g. TitaniumRome, HeatherF to try tackling your problem. :)

MelodyMay 1, 2015

+906

you're not me from the future.......

i fail to see how you are me

if you really are me, then you must send me all my darkest and most deep secrets that I have now (or 20 years ago in your case), and it must be a private message

let's see how this goes!

HeatherFMay 1, 2015

#31

+906

are you saying I might fall for him next year?

HeatherFMay 1, 2015

#35

+906

awww **** my life!

HeatherFMay 1, 2015

#30

+906

first of all, i am in seventh grade. and second of all: WE NEVER DATED!

HeatherFMay 1, 2015

+118723

You are right - it is not working at present.

Perhaps Mr Massow is getting ready to implement some changes ?

I expect there will be some hic ups when he does this.

MelodyMay 1, 2015

+118723

I know how to show this

MelodyMay 1, 2015

+2973

60 is 125% of 48

60 divided by 1.25 48

overall, 60 is 125% of 48 NUMBER THINGYS

TitaniumRomeMay 1, 2015

+2973

a 5/9 chance maybe

TitaniumRomeMay 1, 2015

+11912

9/1 x 1/3

now we will cut 3 by 9 so we have

3/1 x 1/1

= 3

rosalaMay 1, 2015

#13

+11912

not too much......i can delete messages on my computer.......its just thta i thught it wouldve been good if the feature worked on my phone too....well anyways thanks for all your help!

(if you did any)