Page 1 of 1
Dulwich maths (paper e)Please need help
Posted: Wed Jun 26, 2019 10:42 pm
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
Re: Dulwich maths (paper e)Please need help
Posted: Wed Jun 26, 2019 11:26 pm
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...?
Re: Dulwich maths (paper e)Please need help
Posted: Wed Jun 26, 2019 11:35 pm
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????
Re: Dulwich maths (paper e)Please need help
Posted: Wed Jun 26, 2019 11:46 pm
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.
Re: Dulwich maths (paper e)Please need help
Posted: Thu Jun 27, 2019 12:41 am
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....
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
Re: Dulwich maths (paper e)Please need help
Posted: Fri Jun 28, 2019 1:45 pm
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
Re: Dulwich maths (paper e)Please need help
Posted: Fri Jun 28, 2019 1:53 pm
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
Re: Dulwich maths (paper e)Please need help
Posted: Sat Jun 29, 2019 10:44 am
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.