Which of the following statement(s) is/are true? Choose the correct answer…
2025
Which of the following statement(s) is/are true?
Choose the correct answer from the options given below:
- A.
A, B and C Only
- B.
A and B Only
- C.
B, C and D Only
- D.
C and D Only
Attempted by 1 students.
Show answer & explanation
Correct answer: D
Statement A is false. To convert m/sec to km/hr, multiply by 18/5, not 5/18. Statement B is false. If speed becomes 5/6 of usual, time becomes 6/5 of usual. The increase (1/5) is 10 minutes, so the usual time is 50 minutes. Statement C is true. 80 km/hr = 80 × (5/18) m/s = 200/9 m/s = 22 2/9 m/s. Statement D is true. Speed = (600m / 5min) × (1km/1000m) × (60min/1hr) = 7.2 km/hr.