question: The citys most populous ethnic group, non-Hispanic Whites, have proportionally declined from 72.1% of the population in 1990 to 47.9% in 2010, even as total numbers of all ethnicities have increased with the population. Hispanics or Latinos of any race make up 31.5% of the population. Of those 24.0% are of Mexican, 1.4% of Salvadoran, 0.9% of Puerto Rican, 0.9% of Cuban, 0.6% of Guatemalan, 0.2% of Peruvian, 0.2% of Colombian, 0.2% of Honduran and 0.2% of Nicaraguan descent.
Answer this question: How many less percent are the Salvadoran and Puerto Rican groups compared with the Mexicans?
answer: 21.7

question: Prices remained high in Dawson and supply fluctuated according to the season. During the winter of 1897 salt became worth its weight in gold, while nails, vital for construction work, rose in price to $28 per lb . Cans of butter sold for $5 each. The only eight horses in Dawson were slaughtered for dog food as they could not be kept alive over the winter. The first fresh goods arriving in the spring of 1898 sold for record prices, eggs reaching $3 each and apples $1 . Under these conditions scurvy, a potentially fatal illness caused by the lack of vitamin C, proved a major problem in Dawson City, particularly during the winter where supply of fresh food was not available. English prospectors gave it the local name of "Canadian black leg", on account of the unpleasant effects of the condition. It struck, among others, writer Jack London and, although not fatal in his case, brought an end to his mining career. Dysentery and malaria were also common in Dawson, and an epidemic of typhoid broke out in July and ran rampant throughout the summer. Up to 140 patients were taken into the newly constructed St Mary's Hospital and thousands were affected. Measures were taken by the following year to prevent further outbreaks, including the introduction of better sewage management and the piping in of water from further upstream. These gave improvements in 1899, although typhoid remained a problem. The new Han reserve, however, lay downstream from Dawson City, and here the badly contaminated river continued to contribute to epidemics of typhoid and diphtheria throughout the gold rush.
Answer this question: How many more dollars did eggs cost than apples?
answer: 2

question: War between Phillip II's possessions and other countries led to a deterioration of Portugal's Empire, as with the loss of Hormuz to England, but the Dutch Empire was the main beneficiary. The VOC began immediately to prise away the string of coastal fortresses that, at the time, comprised the Portuguese Empire. The settlements were isolated, difficult to reinforce if attacked, and prone to being picked off one by one, but nevertheless the Dutch only enjoyed mixed success in its attempts to do so. Amboina was captured from the Portuguese in 1605, but an attack on Malacca the following year narrowly failed in its objective to provide a more strategically located base in the East Indies with favorable monsoon winds. The Dutch found what they were looking for in Jakarta, conquered by Jan Coen in 1619, later renamed Batavia after the putative Dutch ancestors the Batavians, and which would become the capital of the Dutch East Indies. Meanwhile, the Dutch continued to drive out the Portuguese from their bases in Asia. Malacca finally succumbed in 1641 , Colombo in 1656, Ceylon in 1658, Nagappattinam in 1662 and Cranganore and Cochin in 1662. Goa, the capital of the Portuguese Empire in the East, was unsuccessfully attacked by the Dutch in 1603 and 1610. Whilst the Dutch were unable in four attempts to capture Macau from where Portugal monopolized the lucrative China-Japan trade, the Japanese shogunate's increasing suspicion of the intentions of the Catholic Portuguese led to their expulsion in 1639. Under the subsequent sakoku policy, from 1639 till 1854 the Dutch were the only European power allowed to operate in Japan, confined in 1639 to Hirado and then from 1641 at Deshima. In the mid 17th century the Dutch also explored the western Australian coasts, naming many places.
Answer this question: Portuguese Empire in the East, was unsuccessfully attacked by the Dutch for how many years?
answer:
7