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Homework Help If you're stuck with school work, ask in this forum for help from others.

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  (#1 (permalink)) Old
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HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 06:52 PM

IVE GOT SOME PROBLEMS WITH MY MATHS HOMEWORK.





HAJRA'S WEEKLY PAY THIS YEAR IS 240
This is 20% more than her weekly pay last year.


Bill says 'This means Hajra's weekly pay last year was 192'.



BILL IS WRONG!




a) explain why.


.................
.........
..
.



































































b) Work out Hajra's weekly pay last year.











































.............
  (#2 (permalink)) Old
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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 06:58 PM

Are you sure Bill was wrong? When i worked it out I got 192 as well lol

The way you do it is

240 X 0.80

because to get the whole thing you times it by 1 but you want 20 percent less so if you take 20 off 1 you get 0.80... the thing is though 240 X 0.80 is 192


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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 07:00 PM

BILL IS WRONG. I WORKED OUT A NOW JUST CONFUSED HOW TO DO B
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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 07:04 PM

Well if she earns 20% more than last year that means its a 120% at the moment.
her loan last year was a 100% therefore 200 dollars
do you understand what i mean?

edit: I mean pounds, sorry


But when the night is falling
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The New Radicals - You Get What You Give



Last edited by LetsRock; April 19th 2009 at 07:04 PM. Reason: wrong currency
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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 07:04 PM

How can you be sure that bill is wrong? By the way you shouldnt have marked this post as triggering because it isnt.

EDIT: On second thoughts, 200 is right... because yeah she is currently earning 120%. So you divide 240 by 120 to get 1% which is 2. You then multiply 2 by 100 to get the full amount which is 200.

Well done Hanna


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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 07:08 PM

i dont get it. i dont think you're right

and bill is wrong because it says in the question

Last edited by Dom; April 19th 2009 at 07:09 PM. Reason: Multiple posts have been merged automatically.
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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 07:11 PM

Thanks Jen
and dom i can assure you its right.
You take last years salary as a basis, thats a 100%
now he gets 20% more so now he earns 120% which is 240 pounds
therefore 100% is 200 pounds


But when the night is falling
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Hold tight
You've got the music in you
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One dance left
This world is gonna pull through
Don't give up
You've got a reason to live
Can't forget you only get what you give
The New Radicals - You Get What You Give


  (#8 (permalink)) Old
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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 07:20 PM

how do you find 100% of 240?

get it now i think

for a would the answer be








BILL HAS FOUND 20% OF HAJRA'S WEEKLY PAY THIS YEAR INSTEAD OF FINDING 20% OF HER EARNINGS THE PREVIOUS YEAR.



i got this answer then realised b was all wrong so not sure if A is right

Last edited by Dom; April 19th 2009 at 07:25 PM. Reason: Multiple posts have been merged automatically.
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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 07:26 PM

Well there is an easier way than i do it but i divided 120 through 100 and got 1.2
and then i divided 240 through 1.2 and got 200
basically 120% equals 240 pounds, but you need 100%, so you need to look what factor you candivide 120 with to get 100 and use that factor to get from 240 to the number you need. at school i write it like this
120% = 240
100% = x and then do the calculations
sounds a bit complicated, theres an easier way though
you calculate this 240:120*100


But when the night is falling
And you cannot find the light
If you feel your dream is dying
Hold tight
You've got the music in you
Don't let go
You've got the music in you
One dance left
This world is gonna pull through
Don't give up
You've got a reason to live
Can't forget you only get what you give
The New Radicals - You Get What You Give


  (#10 (permalink)) Old
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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 09:28 PM

240:1,2=200

(240=120%)




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Re: HELP ME ON MY HOMEWORK PLEASE - April 19th 2009, 10:30 PM

x+ 0.2x=240
x=200


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