UF150 - Half as Old

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Half as Old
PL3150T.png
PL3150B.png
Puzzle Number 150
Puzzle Name (US)Half as Old
(UK)Sisterly Sums
Picarats Given 15 Picarats
Type Write Answer
Location Service Entrance
Previous Puzzle UF149 - Strange Symbols
Next Puzzle UF151 - A Difference of 39

This is the one hundred and fiftieth puzzle you will encounter in Professor Layton and the Unwound Future. To access this puzzle, you must examine the pool of water. In order to solve this puzzle, you must determine the age of the younger sister.

Contents

[edit] Hints

Hint One
    Don't worry about their ages one year ago. The key is what their ages will be one year from now.

    Think about what it means to divide a number into a top and bottom half.

Hint Two
    Have you figured out what it means to split the numbers into two parts, top and bottom?

    From zero to nine, the only numbers that retain a numerical meaning even when they're cut in half are one and eight.

Hint Three
    If one year from now the older sister is one year old, the younger sister will also be one, so this can't be right.

    If a year from now the older sister is eight years old, the younger sister will be zero, so this also can't be right.

    It also doesn't work for 81 or 88...

Super Hint
    Nothing in this tab.


[edit] Messages

[edit] When Failed

Too bad.

Don't think too hard - try changing your way of thinking instead.

[edit] When Completed

Correct!

The little sister is nine years old.

The older sister is 17. A year ago, the older sister was 16 and the younger was eight, so she was half the age of the older one.

A year from now, the older sister will be 18 and the younger one 10. If you divide an 18 into a top half and a bottom half, each one is a 10!

[edit] Solution

PL3150ST.png

The younger sister is currently nine.

[edit] Progress

3985 Picarats and 266 Hint Coins.



Last edited by Squiggle on 27 November 2015 at 03:44
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