LLD - Design — Hotel Booking System
In a system where refund percentage decreases by 10% every hour after cancellation deadline, what is the refund percentage 3 hours late if initial refund is 100%?
In a system where refund percentage decreases by 10% every hour after cancellation deadline, what is the refund percentage 3 hours late if initial refund is 100%?
medium📝 Analysis Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Calculate total decrease after 3 hours
Decrease = 3 * 10% = 30%.Step 2: Subtract decrease from initial refund
Refund = 100% - 30% = 70%.Final Answer:
70% -> Option DQuick Check:
Refund percent = 70% after 3 hours late [OK]
Quick Trick: Subtract 10% per hour late from 100% [OK]
Common Mistakes:
- Multiplying instead of subtracting decrease
- Using wrong percentage decrease
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