The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Question
How to solve rate problems leading to fractional equations (Question 3)