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BENCHMARK copper on the London Metal Exchange closed at $US5,135 a tonne. Please help me, I want to find out how much a kilogram of copper costs 175.45.116.59 ( talk) 04:54, 9 October 2015 (UTC)
What is the most complete laplace transform table on web?-- 95.250.182.104 ( talk) 14:43, 9 October 2015 (UTC)
I figured out eight years ago when I bought my current car that it got 22 miles to the gallon. I haven't determined whether this is still the case, but let's assume it is. Let us also assume consistent gas mileage regardless of whether I am in the city or the country, or whether I am running my air condtioning or not.
I am approximately 176 miles from the beach. After 70 miles, with my usual route, I cross the border from North Carolina into South Carolina. Regular unleaded gas which may contain ethanol (referred to as "gas" from now on) in the last town before the border was around $2.09.9 (".9" is assumed from now on). At the border, gas was $1.94. South Carolina gas taxes are lower. In the first town, about 15 miles from the border, one place is $1.89, though it is cash only (I try to avoid using cash but it wouldn't have been impossible) and there is a higher price if I use my credit card. One place is $1.87 but there's no place to wash my hands after I finish. Another place is $1.89 but I wasn't close enough to see if that was a credit price. 20 miles farther down the road is the place where I ate lunch, and gas was $1.89. But I figured I could do better. About 20 miles from the beach, one place was $1.79 but I recalled that it was cash only. Another place was $1.79 but it was on the wrong side of the road and the clerk gave me attitude about filling up, explaining how easy it was to "pay at the pump". Well, maybe for her. The one place that had the lowest price some years ago was $1.83, about 15 miles from the beach. I decided it was probably going to go up from there and I filled up.
I was so wrong. In fact, the price kept going down and several places at the beach were $1.79. This has never happened. Still, I was gambling because I had never seen prices continue to go down. One place was $1.78 as I was going home, but I couldn't benefit. The two places that were $1.79 were the same, even though some places were a penny higher and some were a penny lower. I still couldn't benefit. But I returned to that last town and had a decision to make. Now I could have gone to that one other place that was $1.89. By this time I was going to benefit at least a little. Instead, I stopped at the place where I would pay cash and just got milk to eat with my lunch bought 20 miles away. I just decided to wait because gas would be that low soon.
Gas went back up, then down. This week with the "low fuel" light on, I passed a place that was $1.98, though most places were much higher. I got $20 worth.
So are there any mathematical formulas that might tell me what the best move would have been?— Vchimpanzee • talk • contributions • 18:28, 9 October 2015 (UTC)
Mathematics desk | ||
---|---|---|
< October 8 | << Sep | October | Nov >> | Current desk > |
Welcome to the Wikipedia Mathematics Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
BENCHMARK copper on the London Metal Exchange closed at $US5,135 a tonne. Please help me, I want to find out how much a kilogram of copper costs 175.45.116.59 ( talk) 04:54, 9 October 2015 (UTC)
What is the most complete laplace transform table on web?-- 95.250.182.104 ( talk) 14:43, 9 October 2015 (UTC)
I figured out eight years ago when I bought my current car that it got 22 miles to the gallon. I haven't determined whether this is still the case, but let's assume it is. Let us also assume consistent gas mileage regardless of whether I am in the city or the country, or whether I am running my air condtioning or not.
I am approximately 176 miles from the beach. After 70 miles, with my usual route, I cross the border from North Carolina into South Carolina. Regular unleaded gas which may contain ethanol (referred to as "gas" from now on) in the last town before the border was around $2.09.9 (".9" is assumed from now on). At the border, gas was $1.94. South Carolina gas taxes are lower. In the first town, about 15 miles from the border, one place is $1.89, though it is cash only (I try to avoid using cash but it wouldn't have been impossible) and there is a higher price if I use my credit card. One place is $1.87 but there's no place to wash my hands after I finish. Another place is $1.89 but I wasn't close enough to see if that was a credit price. 20 miles farther down the road is the place where I ate lunch, and gas was $1.89. But I figured I could do better. About 20 miles from the beach, one place was $1.79 but I recalled that it was cash only. Another place was $1.79 but it was on the wrong side of the road and the clerk gave me attitude about filling up, explaining how easy it was to "pay at the pump". Well, maybe for her. The one place that had the lowest price some years ago was $1.83, about 15 miles from the beach. I decided it was probably going to go up from there and I filled up.
I was so wrong. In fact, the price kept going down and several places at the beach were $1.79. This has never happened. Still, I was gambling because I had never seen prices continue to go down. One place was $1.78 as I was going home, but I couldn't benefit. The two places that were $1.79 were the same, even though some places were a penny higher and some were a penny lower. I still couldn't benefit. But I returned to that last town and had a decision to make. Now I could have gone to that one other place that was $1.89. By this time I was going to benefit at least a little. Instead, I stopped at the place where I would pay cash and just got milk to eat with my lunch bought 20 miles away. I just decided to wait because gas would be that low soon.
Gas went back up, then down. This week with the "low fuel" light on, I passed a place that was $1.98, though most places were much higher. I got $20 worth.
So are there any mathematical formulas that might tell me what the best move would have been?— Vchimpanzee • talk • contributions • 18:28, 9 October 2015 (UTC)