Paper 1 · Mathematical Reasoning and Aptitude
UGC NET 26th June 2025 Shift 1
Which of the following statement(s) is/are wrong?
- 1. A man runs at a speed of 20 km/hr and covers a distance of 400 m. The time taken by the man to cover 400 m is 8 minutes.
- 2. A person covers a certain distance at x km/hr and an equal distance at y km/hr. The average speed during the whole journey is 2xy/(x+y) km/hr.
- 3. A Cyclist covers a distance of 750 m in 2½ minutes. The speed of the cyclist is 18 km/hr.
- 4. A speed of x km/hr is equal to 5x/18 m/sec.
A1 only ✓ Correct
B1 & 2 only
C1 & 3 only
D2, 3 & 4 only
Correct answer: (A) 1 only — At 20 km per hour, 400 m which is 0.4 km takes 0.4 ÷ 20 = 0.02 hour = 1.2 minutes, not 8 minutes, so statement 1 is wrong. The…
Explanation
★At 20 km per hour, 400 m which is 0.4 km takes 0.4 ÷ 20 = 0.02 hour = 1.2 minutes, not 8 minutes, so statement 1 is wrong. The harmonic mean speed in 2, the 18 km per hour cyclist in 3, and the 5x/18 conversion in 4 are all correct.
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