It is currently Fri Jan 19, 2018 3:52 pm

 All times are UTC

 Page 1 of 1 [ 4 posts ]
 Print view Previous topic | Next topic
Author Message
 Post subject: Tricky maths questionPosted: Sun Dec 30, 2007 2:58 pm
Can anyone help solve the below maths question:

On a Monday morning, a teacher asked a class of 25 boys whether they had taken a bath or shower during the weekend. Eighteen boys had a shower, 10 had a bath and 3 had neither and were very dirty. How many boys had taken both a bath and a shower.

Thanks

Top

 Post subject: Posted: Sun Dec 30, 2007 3:43 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 13994
25 in the class - first subtract those who had neither, 25 - 3 = 22

Some boys have been counted twice [ie had both a shower and a bath]

18 + 10 = 28 but there are only 22 boys that we are talking about.

So 28 - 22 = 6 so 6 have been counted twice and had both a bath and a shower.

[Rather a silly question as who can imagine any 11 year old boy wanting BOTH!!! ]

These are usually best done using a Venn diagram but I cannot draw one on here ...

Top

 Post subject: Tricky maths questionPosted: Sun Dec 30, 2007 5:05 pm
Thanks Guesr55 for your help. I can't imagine my brother wanting both!

Top

 Post subject: Posted: Sun Dec 30, 2007 8:44 pm

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 7138
Location: East Kent
depends on their age, some will spend an hour in the shower and some will not even realise that there is no hot water after a week- long boiler breakdown....

yours
mother of a teenaged boy
of kent

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 4 posts ]

 All times are UTC

#### Who is online

Users browsing this forum: No registered users and 2 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