Question

nina’s grades could be better. she gets about five hours of sleep every weeknight and ten hours per night on weekends. how much sleep should she get to better concentrate on schoolwork?
○ five to six hours every night
○ nine to ten hours every night
○ a total of forty hours a week
○ a minimum of eighty hours a week

Explanation:

To determine the appropriate sleep for better concentration, we refer to sleep recommendations for students (or individuals aiming to focus on schoolwork). Typically, teenagers/students benefit from 9 - 10 hours of sleep per night for optimal cognitive function (including concentration). Let's analyze each option:

• "five to six hours every night": This is less than recommended and likely insufficient for concentration.
• "nine to ten hours every night": Aligns with standard sleep recommendations for better focus and academic performance.
• "a total of forty hours a week": Calculating, 40 hours a week is about \( \frac{40}{7}\approx5.7 \) hours per night, still insufficient.
• "a minimum of eighty hours a week": \( \frac{80}{7}\approx11.4 \) hours per night, which is more than the typical recommendation (though some may need more, 9 - 10 is the standard range for most).

Answer:

B. nine to ten hours every night