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 Post subject: Dulwich maths (paper e)Please need helpPosted: Wed Jun 26, 2019 9:42 pm

Joined: Wed Jun 12, 2019 2:26 pm
Posts: 21
Hi all
this is the question

A bottle contains 150ml juice.Alex drinks 50%more thank Jane and these two friends finish the bottle between them.Calculate how much Alex drinks.I am struggling with this one.in the mark scheme it shows ratio
3:2 .I don't know how that can work.Any help pls

Many thanks

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 Post subject: Re: Dulwich maths (paper e)Please need helpPosted: Wed Jun 26, 2019 10:26 pm

Joined: Wed Jan 18, 2012 11:41 am
Posts: 10237
Location: Essex
Sulikhan wrote:
Hi all
this is the question

A bottle contains 150ml juice.Alex drinks 50%more thank Jane and these two friends finish the bottle between them.Calculate how much Alex drinks.I am struggling with this one.in the mark scheme it shows ratio
3:2 .I don't know how that can work.Any help pls

Many thanks

Alex drinks half as much again as Jane. So if Jane drinks one unit, Alex drinks one and a half units. Or, to turn Alex's share into whole units, if Jane drinks 2 units, Alex drinks three.

So you have a total of 5 units - divide 150 by 5...? then turn the 3 portions / 2 portions into actual amounts...?

_________________
Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx

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 Post subject: Re: Dulwich maths (paper e)Please need helpPosted: Wed Jun 26, 2019 10:35 pm

Joined: Wed Jun 12, 2019 2:26 pm
Posts: 21
Sulikhan wrote:
Hi all
this is the question

A bottle contains 150ml juice.Alex drinks 50%more thank Jane and these two friends finish the bottle between them.Calculate how much Alex drinks.I am struggling with this one.in the mark scheme it shows ratio
3:2 .I don't know how that can work.Any help pls

Many thanks

Alex drinks half as much again as Jane. So if Jane drinks one unit, Alex drinks one and a half units. Or, to turn Alex's share into whole units, if Jane drinks 2 units, Alex drinks three.

So you have a total of 5 units - divide 150 by 5...? then turn the 3 portions / 2 portions into actual amounts...?

hi again

many thanks for the reply.i'm not quite sure how forums work as it's first time doing it.

thanks again
but what about the other 2 friends who have finished it????

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 Post subject: Re: Dulwich maths (paper e)Please need helpPosted: Wed Jun 26, 2019 10:46 pm

Joined: Wed Jan 18, 2012 11:41 am
Posts: 10237
Location: Essex
Sulikhan wrote:
Sulikhan wrote:
Hi all
this is the question

A bottle contains 150ml juice.Alex drinks 50%more thank Jane and these two friends finish the bottle between them.Calculate how much Alex drinks.I am struggling with this one.in the mark scheme it shows ratio
3:2 .I don't know how that can work.Any help pls

Many thanks

Alex drinks half as much again as Jane. So if Jane drinks one unit, Alex drinks one and a half units. Or, to turn Alex's share into whole units, if Jane drinks 2 units, Alex drinks three.

So you have a total of 5 units - divide 150 by 5...? then turn the 3 portions / 2 portions into actual amounts...?

hi again

many thanks for the reply.i'm not quite sure how forums work as it's first time doing it.

thanks again
but what about the other 2 friends who have finished it????

Um...

Assuming that's actually a genuine question, these two friends are Alex and Jane? i.e. the two people who have just been named.

_________________
Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx

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 Post subject: Re: Dulwich maths (paper e)Please need helpPosted: Wed Jun 26, 2019 11:41 pm

Joined: Fri Aug 24, 2018 4:26 pm
Posts: 118
By the way... Reading the questions for the first time,I had the same question - who are these two other friends who finished the bottle....

As for the solution - diagram, as usual, is our friend.
Draw Jane's glass as two squares, then Alex' glass will be 3 squares. Here is the ratio from the answer

Last edited by Yes on Fri Jun 28, 2019 5:46 pm, edited 1 time in total.

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 Post subject: Re: Dulwich maths (paper e)Please need helpPosted: Fri Jun 28, 2019 12:45 pm

Joined: Mon Nov 02, 2015 5:42 pm
Posts: 44
If i do in algebra

Jane = x

Alex = x+x/2 = 3x/2

Total = 150ml

3x/2 +x =150

If i simplify my equation x=60

So alex one is 3x/2 = 90ml

I hope this will help

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 Post subject: Re: Dulwich maths (paper e)Please need helpPosted: Fri Jun 28, 2019 12:53 pm

Joined: Wed Jun 12, 2019 2:26 pm
Posts: 21
gg234 wrote:
If i do in algebra

Jane = x

Alex = x+x/2 = 3x/2

Total = 150ml

3x/2 +x =150

If i simplify my equation x=60

So alex one is 3x/2 = 90ml

hi

thank u very much. it really helped

I hope this will help

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 Post subject: Re: Dulwich maths (paper e)Please need helpPosted: Sat Jun 29, 2019 9:44 am

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 7618
Location: East Kent
I would definitely draw a diagram to work this sort of question out. KS2 children would not be expected to go straight to algebra and the diagram really helps understanding of the question.

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