gavroche
Getting old but not past it
- Location
- North Wales
It is Sunday today so just to let you know, my brain is having his rest day. 
A Sunday morning puzzle for you.
- Thread starter Dave7
- Start date
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OK, it's Monday morning now, but to keep your minds ticking over ...
There is a 10 volume set of novels on the book shelf.
For simplicity, all volumes are of equal size.
Each volume has a hard back cover of 5mm thickness and the internal pages in each volume amount to 40mm.
There is a bookworm on page one of volume one and he wants to get to the last page in the last volume.
How far will he have to travel as he eats his way through the volumes?
There is a 10 volume set of novels on the book shelf.
For simplicity, all volumes are of equal size.
Each volume has a hard back cover of 5mm thickness and the internal pages in each volume amount to 40mm.
There is a bookworm on page one of volume one and he wants to get to the last page in the last volume.
How far will he have to travel as he eats his way through the volumes?
640mm ??
I assume its not a straight forward math question and there will a catch but that is the answer I have using my head and no calculator.
Mo1959
Legendary Member
- Location
- Perthshire,Scotland
495?
Nice try, but no. A bit less.
Jenkins
Legendary Member
- Location
- Felixstowe
490mm
10 x 40mm internal volumes
8 x front & back covers of 5mm each = 80mm
1 back cover (vol 1) of 5mm + 1 x front cover (vol 10) of 5mm = 10mm
10 x 40mm internal volumes
8 x front & back covers of 5mm each = 80mm
1 back cover (vol 1) of 5mm + 1 x front cover (vol 10) of 5mm = 10mm
Mo1959
Legendary Member
- Location
- Perthshire,Scotland
Ah, I thought it was until he was all the way through including the back cover.
Read it again and see I’m wrong. Teach me to take my time reading questions!Getting closer, but still too high.
Jenkins
Legendary Member
- Location
- Felixstowe
Just had a thought - if the books are arranged numerically 1 - 10 from left to right, the bookworm doesn't need to go through vol 1 to get to vol 2, just the front cover and similar with volume 10 as it only need to get through the back cover, so...
8 x internal volumes of 40mm = 320mm
8 x front & back covers of 5mm = 80mm
1 x front cover (vol 1) & 1 back cover (vol 10) = 10mm
Total 410mm
8 x internal volumes of 40mm = 320mm
8 x front & back covers of 5mm = 80mm
1 x front cover (vol 1) & 1 back cover (vol 10) = 10mm
Total 410mm
Correct - well thought out.
ColinJ
Puzzle game procrastinator!
- Location
- Todmorden - Yorks/Lancs border
Do bookworms actually eat through hardback covers...? 
If they don't, then you would have to allow for the worm to chomp its way round each cover!
If they don't, then you would have to allow for the worm to chomp its way round each cover!
Oops 540mm.
You have list me there (not difficult I admit) . If he starts inside the cover of volume 1 then surely he has to get through 40mm plus the cover in order to get to volume 2.
Where am I going wrong?
The volumes are left to right 1 to 10. So when on the shelf, the first page is on the right. So the worm only has to get through the front cover to get to volume 2. Simarlily the the last page of vol 10 will be the first page he comes to.
