[Q]: Greg is is a chef. Last night, he was in his kitchen preparing foods for the guests. First, he made some lemonade. In trial one he added some honey in it and stirred it, but in trial two he didn't stir it. Then he made some coffee. In trial three he added hot water in it, but in trial four he added cold water in it. Finally, he made some soup. In trial five he added fine grain salt in it, but in trial six he added coarse salt in it. Given the paragraph above, please answer correctly the following question: In which trial the coffee would be prepared faster, trial three or trial four? Hint: When you add sugar to a cold drink, you may stir it to help the sugar dissolve. If you don't stir, the sugar may eventually dissolve, but it will take much longer. Stirring is one of several factors that affect how fast a solute dissolves in a solvent. Temperature is another factor. A solid solute dissolves faster at a higher temperature. For example, sugar dissolves faster in hot tea than in ice tea. A third factor that affects the rate of dissolving is the surface area of the solute. For example, if you put granulated sugar in a glass of ice tea, it will dissolve more quickly than the same amount of sugar in a cube. That's because granulated sugar has much more surface area than a cube of sugar. You can see videos of all three factors at these URLs
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[A]: trial three
input: Please answer the following: Sweden and Norway had taken two different approaches in dealing with their electric power suppliers. Sweden has broken up large companies into many smaller companies. But Norway kept the handful of large electric power suppliers they had intact, and didn't take initiative to increase their numbers. Given the paragraph above, please answer correctly the following question: Would companies in Norway find transmission and distribution harder or easier? Hint: Since the 1990s, many regions have broken up the generation and distribution of electric power to provide a more competitive electricity market. While such markets can be abusively manipulated with consequent adverse price and reliability impact to consumers, generally competitive production of electrical energy leads to worthwhile improvements in efficiency. However, transmission and distribution are harder problems since returns on investment are not as easy to find.
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output: easier
Please answer this: Two identical planets, Norlon and Bothar, have been discovered in a neighboring galaxy of ours. These two planets have the same type of atmosphere as Earth and are extremely similar to Earth in terms of topography and even species of animals that live on them. The main difference is that Norlon is inhabited by a species very similar to humans that emit a lot of carbon dioxide into the atmosphere. Bothar, however, has no such species on its planet. Given the paragraph above, please answer correctly the following question: Will Norlon or Bothar be able to sustain life for a longer period of time? Hint: The dangers of global warming are being increasingly studied by a wide global consortium of scientists. These scientists are increasingly concerned about the potential long-term effects of global warming on our natural environment and on the planet. Of particular concern is how climate change and global warming caused by anthropogenic, or human-made releases of greenhouse gases, most notably carbon dioxide, can act interactively, and have adverse effects upon the planet, its natural environment and humans' existence. It is clear the planet is warming, and warming rapidly. This is due to the greenhouse effect, which is caused by greenhouse gases, which trap heat inside the Earth's atmosphere because of their more complex molecular structure which allows them to vibrate and in turn trap heat and release it back towards the Earth. This warming is also responsible for the extinction of natural habitats, which in turn leads to a reduction in wildlife population.The most recent report from the Intergovernmental Panel on Climate Change (the group of the leading climate scientists in the world) concluded that the earth will warm anywhere from 2.7 to almost 11 degrees Fahrenheit (1.5 to 6 degrees Celsius) between 1990 and 2100.
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Answer: Bothar
Problem: Two friends met after 20 years. Tom had been smoking tobacco all these years and had some health problems related to that, while Randy quit smoking 25 years ago. Given the paragraph above, please answer correctly the following question: Which friend was exposed less to one of the main sources of chemical carcinogens? Hint: Many different chemical substances cause cancer. Dozens of chemicals in tobacco smoke, including nicotine, have been shown to cause cancer ( Figure below ). In fact, tobacco smoke is one of the main sources of chemical carcinogens. Smoking tobacco increases the risk of cancer of the lung, mouth, throat, and bladder. Using smokeless tobacco can also cause cancer. Other chemicals that cause cancer include asbestos, formaldehyde, benzene, cadmium, and nickel.

A: Randy
Problem: Given the question: David needs to purchase a camera for his photography class. He went to the local consumer electronics store to find himself a good camera. Two cameras caught his eye, camera A and camera B. Camera A had a very small pinhole, but camera B had larger aperture. David needs to decide which camera should he buy. Given the paragraph above, please answer correctly the following question: Would camera B have higher or lower beam quality? Hint: In practice, the diameter of the aperture is chosen based on the focal length of the lens, the diameter and quality of the input beam, and its wavelength (longer wavelengths require larger apertures). If the hole is too small, the beam quality is greatly improved but the power is greatly reduced. If the hole is too large, the beam quality may not be improved as much as desired. The size of aperture that can be used also depends on the size and quality of the optics. To use a very small pinhole, one must use a focusing lens with a low f-number, and ideally the lens should not add significant aberrations to the beam. The design of such a lens becomes increasingly more difficult as the f-number decreases.
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The answer is:
lower
Problem: Ethiopia and Sudan are two neighboring countries where extreme poverty can be seen. Still Ethiopia has pushed for women's education in the last decade. Sudan has largely failed in investing on women's education. Elsewhere in Africa, the country of Botswana has just overcome extreme poverty, thanks to vast mineral deposits. But they invested on women's education. Given the paragraph above, please answer correctly the following question: Which country would not experience between 1.2% and 1.5% total missed GDP, Ethiopia or Sudan? Hint: This individual monetary gain creates an increase in the overall economic productivity of a country. Girls are underrepresented in schooling, meaning that investments aimed specifically at educating women should produce bigger dividends.[9] Although investment in women's education is not present everywhere, David Dollar and Roberta Gatti have presented findings that show that this decision, along with other failures to invest in women are not "an efficient economic choice for developing countries" and that "countries that under-invest grow more slowly."[3] Looking holistically at the opportunity cost of not investing in girls, the total missed GDP growth is between 1.2% and 1.5%.[10] When looking at different regions, it is estimated that 0.40.9% of the difference in GDP growth is accounted for solely by differences in the gender gap in education.[1] The effect of the educational gender gap is more pronounced when a country is only moderately poor.[3] Thus the incentive to invest in women goes up as a country moves out of extreme poverty.[3]

A:
Ethiopia