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Runaway: A Road Adventure Hints
How do I measure 40cc's of gas?
1 of 13: This is actually a rather famous puzzle -- you might have seen a similar form of it elsewhere.
2 of 13: Start by taking a look at the equipment you've got -- the tank of gas itself, a 30 cc measuring tube, and a 50 cc measuring tube.
3 of 13: Ultimately, you want to end up with 40 cc's of gas in the 50 cc tube, since this is the only tube that holds that much.
4 of 13: Note that you can pour gas from the tank to either tube, and from one tube to the other. Consider the effect of each of these actions carefully.
5 of 13: With some planning, you should be able to get exactly 40 cc's into the 50 cc tube.
6 of 13: The exact actions you need to perform are as follows:
7 of 13: Pour the tank into the 50 cc tube. (30 cc is empty, 50 is full)
8 of 13: Pour the 50 cc tube into the 30 cc tube. (30: full, 50: 20)
9 of 13: Empty the 30 cc tube into the gas tank. (30: empty, 50: 20)
10 of 13: Pour the 50 cc tube into the 30. (30: 20, 50: empty)
11 of 13: Pour the tank into the 50 cc tube. (30: 20, 50: full)
12 of 13: Pour the 50 cc tube into the 30. The 50 cc tube now contains 40 cc's of gasoline.
13 of 13: If you get mixed up at any step along the way, just empty out the tubes and start over again.
