Brain Teasers
Weigh the Beer
A balance scale is perfectly balanced when there are three cans of beer on one side of the scale and one can of beer and a one-half pound bar of gold on the other. Since all the cans of beer are exactly the same size and weight, how much does one can of beer weigh?
Answer
One-quarter pound.Hide Answer Show Answer
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But of course which is worth the most is more inportant!
Does this mean that beer is worth its weight in gold?
Sorry, but the answer given is WRONG, because a pound of gold weighs less than a pound of beer. -----
The reason is that gold is weighed in troy pounds, and most other things, including beer, is weighed in avoirdupois pounds (in the only country that has not yet adopted the metric system). -----
One avoirdupois pound is 7000 grains, or 453.59237 grams. -----
One troy pound is 5760 grains, or 373.24172 grams. -----
So, in the teaser, 2 cans of beer weigh as much as one-half a troy pound of gold (2880 grains). Each can of beer weighs 1440 grains, which is 3 avoirdupois ounces and 127.5 grains (if you enjoy obsolete systems of measurement), or 93.31043 grams, which after you deduct the weight of the empty can, leaves you with a very unsatisfying amount of beer. -----
On 14 July 2004, gold bullion is being traded at about 4852.80 US dollars per troy pound, so that the weight in gold of one of those small cans of beer is worth $1213.20.
The reason is that gold is weighed in troy pounds, and most other things, including beer, is weighed in avoirdupois pounds (in the only country that has not yet adopted the metric system). -----
One avoirdupois pound is 7000 grains, or 453.59237 grams. -----
One troy pound is 5760 grains, or 373.24172 grams. -----
So, in the teaser, 2 cans of beer weigh as much as one-half a troy pound of gold (2880 grains). Each can of beer weighs 1440 grains, which is 3 avoirdupois ounces and 127.5 grains (if you enjoy obsolete systems of measurement), or 93.31043 grams, which after you deduct the weight of the empty can, leaves you with a very unsatisfying amount of beer. -----
On 14 July 2004, gold bullion is being traded at about 4852.80 US dollars per troy pound, so that the weight in gold of one of those small cans of beer is worth $1213.20.
of course, if you just happen to have a bar of gold and weigh it on your bathroom scale (or a food scale for only 1/2 pound), then it's weighed under the same system as the beer cans.
Canu....we're talking applied weight.....not jewlers weight....just a basic....i put a gold brick on a talking scale and it tells me one and a half pound......
the only thing wrong with this teaser is that before the beers can even be put on the scale, they'd be empty........at least if I were the one doing the experiment they would
the only thing wrong with this teaser is that before the beers can even be put on the scale, they'd be empty........at least if I were the one doing the experiment they would
drinking is of the devil so take the gold and run!
Drinking is not of the devil, it's not even bad... in moderation. In excess, or if you do it too often, THEN it's bad
If you think about it, even killing is good, in moderation. For example - if nothing killed anything, there would soon be no room for more life! You may never have children otherwise
No, I'm not sayin go out and kill your neighbor - I'm saying that nothing is truly bad, if done in moderation - however it may be against our moral standards - so dont go kill someone
Seriously. Don't.
But the teaser was a good one, though easy - and this is good from me, because generally I don't like math teasers!
And as for canu, well, some people are just *too* pedantic. Too much so. Sometimes including me, but hey - no one's perfect!
If you think about it, even killing is good, in moderation. For example - if nothing killed anything, there would soon be no room for more life! You may never have children otherwise
No, I'm not sayin go out and kill your neighbor - I'm saying that nothing is truly bad, if done in moderation - however it may be against our moral standards - so dont go kill someone
Seriously. Don't.
But the teaser was a good one, though easy - and this is good from me, because generally I don't like math teasers!
And as for canu, well, some people are just *too* pedantic. Too much so. Sometimes including me, but hey - no one's perfect!
How does a "teaser" like this get approved? Why is it rated 1.5 on difficulty and over 2 for fun? IT IS BRAIN-DEAD SIMPLE: 1/2 x 1/2 = 1/4!
No teaser, no challenge, no fun.
No teaser, no challenge, no fun.
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