It is currently Thu Jul 27, 2017 7:01 am

 All times are UTC

 Page 1 of 1 [ 6 posts ]
 Print view Previous topic | Next topic
Author Message

Joined: Tue May 10, 2011 1:12 pm
Posts: 117

On one bush, there are enough greenfly to feed 9 ladybirds for 4 hours.

a) How long would the greenfly last if there were only 6 ladybirds?

b) How many bushes would be needed to feed 36 ladybirds for 2 hours

Top

Joined: Mon Oct 10, 2011 6:00 pm
Posts: 406
just edited to delete my DS confusing post

Last edited by aargh on Tue Jan 03, 2012 5:24 pm, edited 1 time in total.

Top

Joined: Thu Feb 24, 2011 12:34 pm
Posts: 212
Won't it be 2 bushes for the second question.
1 bush = 9 lady birds for 4 hours = 18 lady birds for 2hours
Therefore, 2 bushes can feed 36 lady birds for 2hours.

Top

Joined: Mon Oct 10, 2011 6:00 pm
Posts: 406
Well yes it will svg123
That rather confusing post above seems to have been posted by DS and he missed off his reason for the first answer.
I have had words with him about going on my forums How do I delete it?

Top

Joined: Thu Apr 24, 2008 9:51 pm
Posts: 401
Don't think you can delete a post completely. Editing it as you have done is best.

Top

Joined: Mon Oct 31, 2011 5:13 pm
Posts: 2
a) One bush allows 9 ladybirds to eat for 4 hours.
That's 36 "eating hours" in total.
If there were only 6 ladybirds, then the 36 hours would last them 6 hours.

b) One bush lets 9 feed for 4 hours. Again, allowing 36 "eating hours"
This 36 hours from one bush should allow 18 to feed for 2 hours.
We need enough bushes for 36 ladybirds for 2 hours - so two bushes should be enough.

That's how I've worked it out - apologies if wrong!

=
ORIGINAL QUESTION BELOW
On one bush, there are enough greenfly to feed 9 ladybirds for 4 hours.
a) How long would the greenfly last if there were only 6 ladybirds?
b) How many bushes would be needed to feed 36 ladybirds for 2 hours

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 6 posts ]

 All times are UTC

#### Who is online

Users browsing this forum: Google Feedfetcher 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