It is currently Sun Oct 23, 2016 8:27 pm

 All times are UTC

 Page 1 of 1 [ 8 posts ]
 Print view Previous topic | Next topic
Author Message
 Post subject: maths help- urgentPosted: Sat Sep 24, 2011 2:51 pm

Joined: Thu Mar 17, 2011 12:58 pm
Posts: 92
Rhys and Ricky's age add upto 10. In 10 years time , Rhys will be one and a half times as old as Ricky. How old is Ricky now?

Many Thanks,

Top

 Post subject: Re: maths help- urgentPosted: Sat Sep 24, 2011 3:20 pm

Joined: Mon Jun 22, 2009 2:24 pm
Posts: 170
In 10 years time their ages will add up to 30 (10 +10 +10), Rhys age will be 3/5 of 30, Ricky 2/5 of 30, which makes Ricky 12 in 10 years, therefore he his 2 now.

I think that works?

Top

 Post subject: Re: maths help- urgentPosted: Sat Sep 24, 2011 4:44 pm

Joined: Thu Mar 17, 2011 12:58 pm
Posts: 92
Thankyou, NorthlondonMum!. Got it.

Top

 Post subject: Re: maths help- urgentPosted: Mon Apr 09, 2012 4:15 pm

Joined: Sun Apr 08, 2012 9:55 am
Posts: 7
Why will their ages add up to 30 in ten years' time and not 20, if they add up to ten now? Sorry- I am awful at the logic at Maths.

Top

 Post subject: Re: maths help- urgentPosted: Mon Apr 09, 2012 4:35 pm

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8080
Because they are adding ten years each to the total

Top

 Post subject: Re: maths help- urgentPosted: Mon Apr 09, 2012 4:43 pm

Joined: Fri Nov 16, 2007 9:49 pm
Posts: 37
The equations are:

Rh + Ri = 10
Rh + 10 = (Ri +10) * 3 / 2

Rh + 10 = (20 - Rh) * 3 / 2
Rh + 10 = 30 - 3Rh / 2
5Rh / 2 = 20
Rh = 40 / 5 = 8

Top

 Post subject: Re: maths help- urgentPosted: Mon Apr 09, 2012 4:48 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11690
Algebra really doesn't help with these questions - the first method posted is easier to understand.

Top

 Post subject: Re: maths help- urgentPosted: Mon Apr 09, 2012 5:12 pm

Joined: Sun Apr 08, 2012 9:55 am
Posts: 7
Thank you everybody for replying. I appreciate it. I am new to this and am reading these forums with growing fascination (and terror!).

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 8 posts ]

 All times are UTC

#### Who is online

Users browsing this forum: No registered users and 1 guest

 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