Determining the day of the week for a specific future date
Question
A number is mistakenly divided by 4 instead of multiplying by 4. What is the percentage change in the result due to this mistake?
Options
25%
50%
72.75%
93.75%
Explanation
Let the original number be x. Choose a convenient value to avoid fractions; let x = 4.
The correct intended operation was multiplication [cite: 1432, 1434]: Correct Result = 4 × 4 = 16. The mistaken operation performed was division : Mistaken Result = 4 \div 4 = 1.0.
Calculate the percentage change relative to the correct baseline result: Absolute drop = 16 - 1 = 15. Percentage change = Change{Correct Baseline} × 100 = 15/16 × 100.
15/16 × 100 = 15 × 6.25\% = 93.75\%.
Answer: (d).
Question details
Year
2024
Paper
CSAT
Question
Q27
Section
Logical & Analytical Reasoning
Sub-topic
Calendars
Type
Factual single
Difficulty
Medium
Source hint
Calendar date calculation
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