It is currently Thu Dec 08, 2016 6:06 pm

 All times are UTC

 Page 1 of 2 [ 12 posts ] Go to page 1, 2  Next
 Print view Previous topic | Next topic
Author Message
 Post subject: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 2:21 pm

Joined: Sat Dec 03, 2011 3:14 pm
Posts: 625
Question 38 - Can anyone help with this question?

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 2:24 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11951
Can you type it out?

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 2:33 pm

Joined: Sat Dec 03, 2011 3:14 pm
Posts: 625
Sorry - it is copied out below.

Magda and her friends go to the cinema.
They buy 1 large tub of popcorn, 4 fizzy drinks and 10 packets of crisps. The bill comes to £10.89.

Lena and her friends go to the cinema.
They buy 1 large tub of popcorn, 3 fizzy drinks and 7 packets of crisps. The bill comes to £8.64.

How much would it cost to buy 1 large tub of popcorn, 1 fizzy drink and 1 packet of crisps?

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 2:51 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11951

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 2:53 pm

Joined: Sat Dec 03, 2011 3:14 pm
Posts: 625
don't know - tried simultaneous equations and ratios but am stumped.

There seems to be some information missing unless I'm missing something really obvious and being tunnel visioned which is why I hope someone will come along and solve the riddle

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 2:59 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11951
Well this is what I did ...

I subtracted to get what one fizzy drink and 3 packets of crisps is.

Then I rewrote the first as:

1 large tub of popcorn + 1 fizzy drink + 1 packet of crisps + (3 fizzy drinks and 9 packets of crisps) is 10.89

Does that help?

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 3:12 pm

Joined: Sat Dec 03, 2011 3:14 pm
Posts: 625
Thank You - quite neat although would a 10/11 year old know how to expand an equation.

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 3:22 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11951
I think it's a bit tricky but it doesn't need algebra.

The key is understanding that you don't need the individual price of each thing.

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 4:52 pm

Joined: Sat Jul 20, 2013 10:31 am
Posts: 168
DS has worked it out as follows

1P + 4D + 10C = £10.89
1P + 3D + 7C = £8.64
1D + 3C = £2.25
3D + 9C = £6.75

£10.89 - £6.75 = £4.14

Hope this helps.

Top

 Post subject: Re: North London Consortium 2013 Group 2Posted: Sat Jan 04, 2014 5:00 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11951
Future that's what I did without the need for algebra!

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 2 [ 12 posts ] Go to page 1, 2  Next

 All times are UTC

#### Who is online

Users browsing this forum: No registered users and 3 guests

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum

Search for:
 Jump to:  Select a forum ------------------ FORUM RULES    Forum Rules and FAQs 11 PLUS SUBJECTS    VERBAL REASONING    MATHS    ENGLISH    NON-VERBAL REASONING    CEM 11 Plus GENERAL    GENERAL 11 PLUS TOPICS    11 PLUS APPEALS    11 PLUS TUTORS    INDEPENDENT SCHOOLS    11 PLUS CDs/SOFTWARE    11 PLUS TIPS    PRIMARY    SEN and the 11 PLUS    EVERYTHING ELSE .... 11 PLUS REGIONS    Berkshire    Bexley and Bromley    Birmingham, Walsall, Wolverhampton and Wrekin    Buckinghamshire    Devon    Dorset    Essex    Essex - Redbridge    Gloucestershire    Hertfordshire (South West)    Hertfordshire (Other and North London)    Kent    Lancashire & Cumbria    Lincolnshire    Medway    Northern Ireland    Surrey (Sutton, Kingston and Wandsworth)    Trafford    Warwickshire    Wiltshire    Wirral    Yorkshire BEYOND 11 PLUS    Beyond 11 Plus - General    GCSEs    6th Form    University