It resulted in crop failure
The percent of increase in sales from last year to this year is 5%.
Since the current vacuum sales is compared to the previous vacuum sales, the previous vacuum sales will be used as the basis of either increase or decrease of sales in the current year. In this instance, it is increase in sales.
We simply divide 567 by 540 and multiply the quotient with 100% and deduct 100% from the product to get the percent increase.
567 / 540 = 1.05 x 100% = 105% - 100% = 5% percent of increase.
or simply get the difference in sales and divide it by the previous sales and multiply by 100%
567 - 540 = 27 / 540 = 0.05 x 100% = 5%
Answer: 34 to 36 million
Explanation: HIV/AIDS has shaken the already weak economic and social infrastructures of many developing countries. While the majority of infections occur in young adults, children have been affected in numerous ways. Almost three million children younger than 15 years of age are estimated to be HIV-positive, with the vast majority of infections occurring in developing nations (1). As home to 10% of the world’s population but 70% of HIV infections, Sub-Saharan Africa carries the largest disease burden (2). Thirteen million children younger than 15 years of age have lost one or both parents to AIDS, with the number expected to rise to 25 million by 2010 (1). In several African countries, 15% of children are expected to be orphaned by the end of this decade (1).
Answer: B. Improving Agricultural techniques with Irrigation and fast rising rice increased food supplies.
Explanation:
The Song Dynasty of China which lasted from 960 - 1279 AD saw a great increase in population as well as income. This was due to improvements in Agriculture that led to increased food supplies which could support a larger population.
Some of these improvements included irrigation as more farming commenced on the Yangzi River which increased crop yields as well as the introduction of different types of rice such as fast rising rice which meant that more rice could be grown in planting season.
