Chockolate Maths

DaveH

New member
Joined
May 23, 2009
Messages
1
Why / How does this work?
1. First of all, pick the number of times a week that you would
like to have chocolate (more than once but less than 10)
2. Multiply this number by 2 (just to be bold)
3. Add 5
4. Multiply it by 50 -- I'll wait while you get the calculator
5. If you have already had your birthday this year add 1759 .
If you haven't, add 1758.
6. Now subtract the four digit year that you were born.

You should have a three digit number
The first digit of this was your original number
(i.e., how many times you want to have chocolate each week).
The next two numbers are
YOUR AGE! (Oh YES, it is!!!!!)
THIS IS THE ONLY YEAR (2009) IT WILL EVER WORK.

many thanks in anticipation for assistance.
regards DH
 
DaveH said:
Why / How does this work?
1. First of all, pick the number of times a week that you would
like to have chocolate (more than once but less than 10)
2. Multiply this number by 2 (just to be bold)
3. Add 5
4. Multiply it by 50 -- I'll wait while you get the calculator
5. If you have already had your birthday this year add 1759 .
If you haven't, add 1758.
6. Now subtract the four digit year that you were born.

You should have a three digit number
The first digit of this was your original number
(i.e., how many times you want to have chocolate each week).
The next two numbers are
YOUR AGE! (Oh YES, it is!!!!!)
THIS IS THE ONLY YEAR (2009) IT WILL EVER WORK.

many thanks in anticipation for assistance.
regards DH

Hint start naming things:

pick the number of times a week that you would like to have chocolate = d

Multiply this number by 2 = ...................................................... 2d

Add 5 = .............................................................................. 2d + 5

Please show us your work, indicating exactly where you are stuck - so that we know where to begin to help you.
 
HINT (n = 2 to 9):
50(2n + 5) + 1758 = 100n + 2008
50(2n + 5) + 1759 = 100n + 2009
 
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