Archive > The Amazing Race 15 Spoilers
TAR15 EP1506 " Do It for the Hood! Do It for the Suburbs" (Dubai)
georgiapeach:
omg. :lol:
I'm with the calculator crowd!!
michael:
--- Quote ---The problem with your method is precision. You won't get it to multiple decimal places to the right(the example showed 3 places). Using standard paper and pencil arithmetic, I (pretty decent at arithmetic as well as mathematics in general) attempted to do this in less than 55 seconds (leaving 5 seconds to place the pieces on the scale). It took me 100 seconds and my result was 525.33 due to rounding error. The correct answer by calculator is 525.217. Your approximation method has no chance.
--- End quote ---
omg, I tried doing it in 54.2 seconds but it took me 99.221, crap!
Chateau d If:
Michael, you're the king of fast! I can barely get the 'do this in 60 seconds' stuff done quickly enough. :lol:
Yes, go borrow a calculator was definitely the way to go!
Hooky:
I was simply not willing to read all that math stuff. I skipped it! :funny:
Neobie:
Remember the rolling cheese, Chateau? B:) :lol: This method makes use of the fact that one partner is half of two, that 500oz is half of 1000oz, and $500000 half of $1000000. (That's even what they said in the clue!) I've cut out the boring math, but PM me if you're a nerd!
Start with 500oz on the scales. Say the new rate is $942.75/oz.
PARTNER ONE
1. Multiply the rate by 1000. That's double the value you already have.
942.75 x 1000 = 942750
2. Deduct that from 1000000. That's double the remainder value you need.
1000000 - 942750 = 57250
3. Divide that by 2, then round it off to the hundreds place.
57250 / 2 = 28625, rounded to 28600
PARTNER TWO
4. Round off the rate to the tens place.
942.75, rounded to 940
5. Write out multiples of that. This step is not essential, but it speeds up long division. (Same method as Chateau.)
94 x 2 = 188
94 x 3 = 282
94 x 4 = 376
94 x 5 = 470
94 x 6 = 564
94 x 7 = 658
94 x 8 = 752
94 x 9 = 846
TOGETHER
6. Divide Step 3 by Step 4 by long multiplication, and round it to the nearest ounce.
28600 / 940 = 2860 / 94 = 30.4
30.4, rounded off to 30
7. Add 30oz to the scales. Call for the judge.
Did it in 45s without a partner.
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