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Author Topic: This will sink as Titanic did! Math problem  (Read 291 times)
vlajce
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November 02, 2015, 01:40:53 AM
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After visiting my Great Aunt Annie, I travelled home in her old jalopy. The car was old and battered, it had a leak from the petrol tank, and I was stuck in second gear.

This meant that I could only travel along at a steady 30 miles per hour and managed a paltry 20 miles per gallon of fuel.

At the start of the journey I had placed exactly 10 gallons of fuel into the tank. I knew though, that the fuel tank lost fuel at the rate of half a gallon per hour.

Just as I arrived home, the car stopped because it had run out of fuel and I had only just made it.


How far was it from my Great Aunt's to my home?

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Gleb Gamow
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November 02, 2015, 08:10:44 AM
 #2

After visiting my Great Aunt Annie, I travelled home in her old jalopy. The car was old and battered, it had a leak from the petrol tank, and I was stuck in second gear.

This meant that I could only travel along at a steady 30 miles per hour and managed a paltry 20 miles per gallon of fuel.

At the start of the journey I had placed exactly 10 gallons of fuel into the tank. I knew though, that the fuel tank lost fuel at the rate of half a gallon per hour.

Just as I arrived home, the car stopped because it had run out of fuel and I had only just made it.


How far was it from my Great Aunt's to my home?

I'll the answer in a sec.

190 miles

EDIT: I am wrong according to an answer I found via Google. Off by two score.

vlajce
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November 02, 2015, 01:52:35 PM
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Then this needs a bump Wink

galdur
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November 02, 2015, 02:05:13 PM
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You use 1.5 (30/20) gallon per hour and lose 0.5 gallon. So, you drive for 5 hours and travel 150 miles.

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November 02, 2015, 02:07:12 PM
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Is this some kind of analogy for bitcoin and it's future value?
xmaxbit
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November 02, 2015, 02:51:22 PM
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Exactly, he traveled for 5 hours and up to 150 miles.
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November 02, 2015, 02:59:24 PM
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Quote
This will sink as Titanic did!
Titanic never sunk
https://www.youtube.com/watch?v=zOca_wTZ5BQ
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