Dulwich maths (paper e)Please need help

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Sulikhan
Posts: 21
Joined: Wed Jun 12, 2019 3:26 pm

Dulwich maths (paper e)Please need help

Post by Sulikhan »

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
ToadMum
Posts: 11946
Joined: Wed Jan 18, 2012 12:41 pm
Location: Essex

Re: Dulwich maths (paper e)Please need help

Post by ToadMum »

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
Sulikhan
Posts: 21
Joined: Wed Jun 12, 2019 3:26 pm

Re: Dulwich maths (paper e)Please need help

Post by Sulikhan »

ToadMum 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????
ToadMum
Posts: 11946
Joined: Wed Jan 18, 2012 12:41 pm
Location: Essex

Re: Dulwich maths (paper e)Please need help

Post by ToadMum »

Sulikhan wrote:
ToadMum 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
Yes
Posts: 125
Joined: Fri Aug 24, 2018 5:26 pm

Re: Dulwich maths (paper e)Please need help

Post by Yes »

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.... :lol:

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 6:46 pm, edited 1 time in total.
gg234
Posts: 57
Joined: Mon Nov 02, 2015 6:42 pm

Re: Dulwich maths (paper e)Please need help

Post by gg234 »

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
Sulikhan
Posts: 21
Joined: Wed Jun 12, 2019 3:26 pm

Re: Dulwich maths (paper e)Please need help

Post by Sulikhan »

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
yoyo123
Posts: 8099
Joined: Mon Jun 18, 2007 3:32 pm
Location: East Kent

Re: Dulwich maths (paper e)Please need help

Post by yoyo123 »

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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