# Thread: Take Chocolate Math class

1. Shubham, i think chocolate always sweet.

2. Originally Posted by jakki
like i am in 1989 put your and then start using your calculator again.
I was just noting that of course it can figure out your age, you are putting in the equation your birth year.

3. Net Builder
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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)

OK, let's call this number 'a'

2. Multiply this number by 2 (just to be bold)

Now we have 2a

Now we have 2a + 5

4. Multiply it by 50 — I’ll wait while you get the calculator

Now we have 50(2a + 5)

Let's say we have had our birthday; now we have
50(2a + 5) + 1759

6.. Now subtract the four digit year that you were born.

Let's call that year 'b'; now we have
50(2a + 5) + 1759 - b

You should have a three digit number

Yes, most likely. Let's expand out our equation:
50(2a + 5) + 1759 - b = 100a + 250 + 1759 - b

This equals 100a + 2009 - b

So, we're multiplying 'a' by 100, which moves it into the 'hundreds' column, i.e. the first digit in the three digit number, and then we're left with 2009 - b, which is the number of years between now (2009) and your birth year, i.e. your age.

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!!!!!)

Indeed!
Last edited by Dr. Stavros; 27 August, 2009 at 19:37 PM.

4. Amazing Who finds this sort of stuff? Amazing shit!

5. @Dr. Stavros you are really math DR.

6. Originally Posted by jakki
@Dr. Stavros you are really math DR.
It isn't difficult math, but a very simple equation.

3 guys go to a hotel and rent a room together - they give the guy \$300 (\$100 each)

The owner tell the bellboy to return \$50 because they got a smaller room. The bellboy figures they won't notice the difference and keeps \$20 then give the 3 men \$30 which they spread out evenly \$10 each. So in essence they paid \$90 each (\$270) plus the \$20 the bellboy kept which equals \$290 where did the other \$10 go?

7. Net Builder
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Originally Posted by Shawn
3 guys go to a hotel and rent a room together - they give the guy \$300 (\$100 each)

The owner tell the bellboy to return \$50 because they got a smaller room. The bellboy figures they won't notice the difference and keeps \$20 then give the 3 men \$30 which they spread out evenly \$10 each. So in essence they paid \$90 each (\$270) plus the \$20 the bellboy kept which equals \$290 where did the other \$10 go?
HTML Code:
```Guys    Hotel    Bellboy
300           0           0    (start)
0       300           0    (guys have paid)
0       250         50    (bellboy takes the cash out)
30       250         20    (bellboy pays the guys back; end)```
From start to finish, the guys lose 270, the hotel gains 250, and the bellboy gains 20. Losses = gains, 270 = 250 + 20, there is no missing 10!

8. nice solution Dr.

also the guy pays 90\$ for each total is 270\$
they have 30\$ in his pocket

then how bellboy get 20\$

9. Originally Posted by Dr. Stavros
HTML Code:
```Guys    Hotel    Bellboy
300           0           0    (start)
0       300           0    (guys have paid)
0       250         50    (bellboy takes the cash out)
30       250         20    (bellboy pays the guys back; end)```
From start to finish, the guys lose 270, the hotel gains 250, and the bellboy gains 20. Losses = gains, 270 = 250 + 20, there is no missing 10!
You weren't suppose to tell them!!!!

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