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Help please, cannot think
Posted: Mon Sep 01, 2014 11:06 am
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
Re: Help please, cannot think
Posted: Mon Sep 01, 2014 11:18 am
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
Re: Help please, cannot think
Posted: Mon Sep 01, 2014 11:20 am
by Guest55
You do NOT need to use algebra for this type of problem.
Re: Help please, cannot think
Posted: Mon Sep 01, 2014 11:37 am
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
Re: Help please, cannot think
Posted: Mon Sep 01, 2014 12:47 pm
by sutu123
OH that makes lots of sense. Thank you all.
Re: Help please, cannot think
Posted: Mon Sep 01, 2014 1:06 pm
by moved
Very cheap books and comics.
