5A science policy analyst must review 450 pages of a climate science report. She reads 30 pages in the morning and 15 pages each afternoon. However, on weekends, she reads 50% more per session. If today is a Monday and she must finish reviewing on Sunday, how many pages does she need to read on Sunday afternoon to complete the task? - Decision Point

Understanding the Context

Today is Monday, and the analyst begins her week with a focused yet realistic reading plan:

• Morning session (Monday–Friday): 30 pages per hour
  
• Afternoon session (Monday–Friday): 15 pages per hour
  
• Weekend boost (at 50% increased pace): Read 50% more per session on Saturday and Sunday

Let’s break down her weekly reading capacity:

Daily Reading Breakdown

Key Insights

• Morning (Mon–Fri):
  30 pages/hr × 1 hour = 30 pages
  → Mon: 30 pages, Tue: 30 pages, Wed: 30, Thu: 30, Fri: 30 → 150 pages total

• Afternoon (Mon–Fri):
  15 pages/hr × 1 hour = 15 pages
  → Same schedule: Tue–Fri: 15 pages/day → 60 pages (Mon already counted morning)
  Total daily (Mon–Fri): 45 pages (30 morning + 15 afternoon) → 5×45 = 225 pages over weekdays

• Weekend (Saturday & Sunday – 50% more reading):
  Morning and afternoon sessions still cost one hour each.
  On weekends, her pace increases by 50%, so:
  

  • Morning: 30 pages × 1.5 = 45 pages
    
  • Afternoon: 15 pages × 1.5 = 22.5 pages
    Total per weekend day: 45 + 22.5 = 67.5 pages/day
    → Sat: 67.5 pages, Sun: 67.5 pages → Total weekend: 135 pages

Weekly Total Without Sunday Afternoon Reading

Total pages read from Monday to Saturday:
150 (weekdays) + 135 (Sat & Sun) = 285 pages

Final Thoughts

But the full report is 450 pages, so:

Remaining pages to review on Sunday afternoon:
450 – 285 = 165 pages

However, the question specifically asks: How many pages must she read on Sunday afternoon—assuming she prioritizes finishing on Sunday?

Since she already reads 67.5 pages in the morning and another 67.5 in the afternoon, totaling 135 pages on Sunday, she already finishes more than the remaining pages. But to answer precisely and reinforce the full workflow:

Final Calculation: Required Sunday Afternoon Read

• Pages read Sunday morning: 67.5
  
• Pages read Sunday afternoon (before finishing): 67.5
  
• Total by end of Sunday afternoon: 135 pages
  
• But she only needs 165 more to complete 450