Help please, cannot think

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sutu123
Posts: 54
Joined: Sat Jun 15, 2013 10:03 pm

Help please, cannot think

Post by sutu123 »

Can somebody help please.
A comic cost20p less than a book. If 4books and 7comics cost £2.23, what is the cost of 1comic.

REALLY THANKFUL
Sutu
gulat
Posts: 119
Joined: Wed Mar 20, 2013 2:16 pm

Re: Help please, cannot think

Post by gulat »

If the cost of the Book is B, cost of Comic is B - 20

Cost of 4 books = 4B
So cost 7 comics is 7B -140
Total cost = 223 (Given)

Based on the above it works out that B = 33p and Comic = 13p

Hope that helps
Guest55
Posts: 16254
Joined: Mon Feb 12, 2007 2:21 pm

Re: Help please, cannot think

Post by Guest55 »

You do NOT need to use algebra for this type of problem.
motion
Posts: 232
Joined: Wed Dec 14, 2011 10:54 am

Re: Help please, cannot think

Post by motion »

Each Book cost 20p More than a comic

Hence, The cost of 4 books will be 80p more that the cost of 4 comics

So

7 comics and 4 books cost 223 pence which is also the same as

7 comics and 4 comics + 80p = 223 pence

11 comics + 80p = 223 pence

11 comics = 143p

1 comic = 13p
sutu123
Posts: 54
Joined: Sat Jun 15, 2013 10:03 pm

Re: Help please, cannot think

Post by sutu123 »

OH that makes lots of sense. Thank you all.
moved
Posts: 3826
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Location: Chelmsford and pleased

Re: Help please, cannot think

Post by moved »

Very cheap books and comics. :mrgreen:
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