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Bond Assessment Papers Bk1 - Paper 9 Qu31-34
Posted: Fri Aug 17, 2012 9:54 pm
by madintheattic
Could someone tell me how to work this out? It's the second time a question like this has come up and I've not been able to explain it!
3 pencils and 4 ballpoint pens cost £1.70.
3 pencils and 2 ballpoint pens cost £1.30.
Use this information to find the cost of:
2 ballpoint pens?
1 ballpoint pen?
3 pencils?
1 pencil?
Would greatly appreciate the help - have a feeling it's really obvious and I'm just being dim! Thanks
Re: Bond Assessment Papers Bk1 - Paper 9 Qu31-34
Posted: Fri Aug 17, 2012 10:06 pm
by Okanagan
madintheattic wrote:3 pencils and 4 ballpoint pens cost £1.70.
3 pencils and 2 ballpoint pens cost £1.30.
Use this information to find the cost of:
2 ballpoint pens?
1 ballpoint pen?
3 pencils?
1 pencil?
3 pencils and 4 ballpoint pens cost 40p more than 3 pencils and 2 ballpoint pens, therefore
2 ballpoint pens cost 40p
->
1 ballpoint pens costs 20p
3 pencils and 2 ballpoint pens cost £1.30, and we know that 2 ball point pens cost 40p, therefore
3 pencils cost 90p
->
1 pencil costs 30p
Re: Bond Assessment Papers Bk1 - Paper 9 Qu31-34
Posted: Fri Aug 17, 2012 11:23 pm
by madintheattic
Thank you very much, I see it now.
I still can't seem to apply it to this question in one of the 11+ DIY Papers though -
6 JELLYS and 3 GALAXY CARAMEL cost £7.11. 3 GALAXY CARAMEL and 6 CURLY WURLY cost £6.57.
How much does 1 JELLYS, 1 GALAXY CARAMEL and 1 CURLY WURLY cost?
I've tried and tried! Please put me out of my misery...
Re: Bond Assessment Papers Bk1 - Paper 9 Qu31-34
Posted: Fri Aug 17, 2012 11:42 pm
by Okanagan
madintheattic wrote:6 JELLYS and 3 GALAXY CARAMEL cost £7.11.
3 GALAXY CARAMEL and 6 CURLY WURLY cost £6.57.
How much does 1 JELLYS, 1 GALAXY CARAMEL and 1 CURLY WURLY cost?
Add them together and you get
6 JELLYS +
3 GALAXY CARAMEL +
3 GALAXY CARAMEL +
6 CURLY WURLY costs
£7.11 +
£6.57
which simplified is
6 JELLYS + 6 GALAXY CARAMEL + 6 CURLY WURLY costs £13.68
divide £13.68 by 6 to get the answer £2.28