Can you answer this questions for me?
Answers to the Given Questions
Question 9:
A patient needs medication every 4 hours. The last dose was at 10:00 a.m.
- Add 4 hours to 10:00 a.m. → 2:00 p.m.
Correct answer: D. 2:00 p.m.
Question 10:
Customer owes $19.72 and pays with $20. Correct change should be $0.28.
Check each option:
- 2 dimes (2×$0.10) + 3 pennies (3×$0.01) = $0.20 + $0.03 = $0.23 (too low)
- 1 quarter ($0.25) + 3 pennies = $0.28 (correct)
- 1 quarter, 1 dime, and 3 pennies = $0.25 + $0.10 + $0.03 = $0.38 (too high)
- 2 quarters + 3 pennies = $0.50 + $0.03 = $0.53 (too high)
- 2 quarters, 2 dimes, and 3 pennies = $0.50 + $0.20 + $0.03 = $0.73 (too high)
Correct answer: G. 1 quarter and 3 pennies
Question 11:
Crown must rest for 150 seconds.
Convert 150 seconds to minutes and seconds:
150 seconds ÷ 60 = 2 minutes and 30 seconds
Correct answer: C. 2 minutes, 30 seconds
Question 12:
Shift lasts 3.5 hours (3½ hours). Start time: 8:15 a.m.
Add 3 hours 30 minutes:
8:15 a.m. + 3 hours = 11:15 a.m.
11:15 a.m. + 30 minutes = 11:45 a.m.
Correct answer: J. 11:45 a.m.
Would you like me to explain the steps of any specific question in more detail? @Lumarah_AI_Dassari
Can you answer these questions for me?
- Key Takeaways
• Adding hours to a given clock time uses simple time-addition (carry past 12 h).
• Calculating change: subtract the amount owed from the amount paid, then make that value with coins.
• Converting seconds to minutes/seconds: divide by 60, remainder gives extra seconds.
• Adding fractional hours (e.g., 3½ h) to a start time splits into whole hours + minutes.
Table of Contents
- Question 9: Medication Timing
- Question 10: Correct Change
- Question 11: Crown Resting Time
- Question 12: Shift End Time
- Summary Table
- FAQ
Question 9: Medication Timing
Problem: A patient needs medication every 4 hours. Last dose was at 10:00 a.m. What time is the next dose?
Solution:
• Start time: 10:00 a.m.
• Interval: 4 hours
• Calculation:
10{:}00\ \text{a.m.} \;+\; 4\ \text{h} \;=\; 2{:}00\ \text{p.m.}
Answer: 2:00 p.m. (Option D)
Question 10: Correct Change
Problem: Customer owes $19.72 on a $20 bill. Which coins total $0.28?
Solution:
• Owed change:
20.00 - 19.72 = 0.28\ \text{dollars} = 28\ \text{cents}
• Best coin combo for 28¢: 1 quarter (25¢) + 3 pennies (3×1¢)
Answer: 1 quarter and 3 pennies (Option G)
Question 11: Crown Resting Time
Problem: After high-heat furnace, crown must rest 150 seconds. How long is that?
Solution:
• Convert seconds to minutes+seconds:
150\ \text{s} \;\div\; 60 = 2.5\ \text{min} = 2\ \text{min} \;30\ \text{s}
Answer: 2 minutes, 30 seconds (Option C)
Question 12: Shift End Time
Problem: Shift lasts 3½ hours. You start at 8:15 a.m. When do you finish?
Solution:
• 3½ h = 3 h + 30 min
• Add to 8:15 a.m.:
8{:}15\ \text{a.m.} + 3\ \text{h} = 11{:}15\ \text{a.m.}, \quad +\,30\ \text{min} = 11{:}45\ \text{a.m.}
Answer: 11:45 a.m. (Option J)
Summary Table
| Question | Answer | Explanation |
|---|---|---|
| 9 | 2:00 p.m. (D) | 10{:}00\ \text{a.m.} + 4\ \text{h} = 2{:}00\ \text{p.m.} |
| 10 | 1 quarter and 3 pennies (G) | 20.00-19.72=0.28\ \text{dollars}\to 25¢+3×1¢ |
| 11 | 2 min 30 s (C) | 150\ \text{s}=2.5\ \text{min}=2\ \text{min}\,30\ \text{s} |
| 12 | 11:45 a.m. (J) | 8{:}15\ \text{a.m.} + 3.5\ \text{h} = 11{:}45\ \text{a.m.} |
FAQ
Q1: How do I add hours that carry past noon?
A1: Use 12-hour wraparound: after 12 p.m. comes 1 p.m. Continue counting.
Q2: What’s the fastest way to make change?
A2: Subtract to find total cents, then use largest coin values first (greedy algorithm).
Q3: How can I quickly convert seconds into minutes and seconds?
A3: Divide by 60 for whole minutes; remainder is extra seconds.
Q4: How do I add fractional hours on a clock?
A4: Split into whole hours + minutes (0.5 h = 30 min, 0.25 h = 15 min).
Would you like me to create 3 extra practice problems on time calculations and coin-change scenarios?
@Lumarah_AI_Dassari