TASK DEFINITION: In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
PROBLEM: Article: When I worked as a waitress in Chicago, US, my coworkers and I would sigh whenever we heard someone with a foreign accent coming into our restaurant. We knew what it meant to serve a non-American: no tip. We would work just as hard as we always did, but we might not get paid. Americans have an unspoken rule about tipping: they give tips to almost everyone who offers them a service of some kind. Americans tip their waiters, barbers and taxi drivers. An appropriate tip is between 15 and 20 percent of the amount charged for the service (But the charge for the tip doesn't appear on the bill. The customer is expected to add it himself/herself.) Tipping less than this sends a message to your waiters that you think they've done a bad job serving you. And to leave no tip at all is simply unacceptable. It's not that American waiters are greedy. In many countries, waiters are paid a salary for their work. They'll earn money even if no one comes into the restaurant. This system offers much more safety for waiters than the American version. In the US, waiters know that a night without customers means a night without pay. Some countries include a tip for waiters - a "service charge" - on the bill itself. Since the tip is included with the other charges, waiters don't need to worry about people forgetting to tip. But in the US, waiters do not receive a salary, and service charges only appear on bills when there are six or more customers at the table. Since almost all American customers are familiar with the system, they know to add a tip without being told. But visitors to the US may expect waiters to be paid a salary, or think that the tip is included on the bill. So much as we waiters loved hearing stories about other places from our foreign customers, we were always nervous when they got ready to leave the restaurant. We were never sure what to expect.
Answer: $230

SOLUTION: If you order $200 worth of food, which of the following is a proper total payment?

PROBLEM: Article: We each have a unique genetic (,) make-up. Every cell of your body has the same set of about 100,000 separate genes made of DNA. These are the instructions for producing a person. Genes decide everything from the colour of your skin to the way your brain works. You have one of several billion combinations of DNA which come from the random mixing of your parents' genes. Except for identical twins , no one has the same combination as another person. You are unique! You are unique in another way too: in the way you are raised and all the experiences you have from before birth to adult life. These experiences influence you, your behaviour and attitudes, and the choices you make. But are genes or life experiences more important in shaping your appearance and personality? Scientists are studying twins to find out. One set of twins occurs every 70 births---some are identical and others are non-identical twins. Identical twins are special because they share exactly the same genes and often the same environment. Non-identical twins are more like ordinary brothers and sisters. Some identical twins have been adopted and brought up in different homes. With identical genes but a different home environment, scientists can study twins to see how much a particular feature depends on the genes we inherit. For example, we know that eye problems, like short-sightedness, are mostly genetic. But resistance to pain is largely dependent on experiences. Genes also influence our eating habits. Identical twins brought up apart often like to eat at the same time of day and feel full after eating the same amount. Non-identical twins in similar circumstances have more varied eating habits. Identical twins are also more likely to follow the same patterns for marriage and divorce than non-identical twins. Scientists are trying to identify the different genes that influence our behaviour. Some people are thrill-seekers and get into risk-taking and adventurous activities. They take up extreme sports like bungee jumping and possibly take drugs. Scientists have discovered a gene which affects _ . We could ask, "Are our lives determined by our genes or our upbringing?" Scientists are learning more all the time, but it is certainly true that both are important in making us who we are.
Answer: To discover what shapes us as individuals.

SOLUTION: Why are scientists studying twins?

PROBLEM: Article: "It is obvious that China will climb up university rankings in the years to come."This statement from Phil Baty, editor of the Times Higher Education World University Rankings, lines up with China's optimism that it will produce world-class universities. But there are still difficulties to overcome, experts say. Universities from China's mainland slipped in the 2011-2012 Times' global rankings. Peking University dropped 12 places from last year to 49th, and Tsinghua University fell to 71st place. Among Asian universities, Peking is ranked No. 4 and Tsinghua No. 8. A combination of factors determines rankings -- research output, study environment, reputation and international outlook. Due to China's economic development, investment in education and research has increased, but the quality of education and research in Chinese academia seems not to have kept pace. The gauge is the number of papers published in highly respected English-language journals, so while many papers are being produced in China, it appears not all are good enough to attract international attention. Still, higher education in China is developing quickly, thanks in part to huge government investment. China spent an amount equal to 3.69 percent of GDP on education last year, according to Ministry of Finance data. China has the largest and one of the fastest growing higher education systems in the world -- 2,723 schools for 31 million students. Enrollment has increased more than four times from 2001 to 2011.
Answer: Worried.

SOLUTION:
What's Phil Baty's attitude towards the future of Chinese universities?