The five tyres of a car (four road tyres and one spare) were used equally in a…
2026
The five tyres of a car (four road tyres and one spare) were used equally in a journey of 40,000 kms. The number of kms of use of each tyre was?
- A.
32000
- B.
15400
- C.
25500
- D.
10009
Attempted by 963 students.
Show answer & explanation
Correct answer: A
Answer: 32,000 km
Calculation:
Total tyre-kilometres = distance traveled × number of tyres in use = 40,000 × 4 = 160,000 tyre-km.
Divide the total equally among five tyres: 160,000 ÷ 5 = 32,000 km per tyre.
Practical rotation explanation: split the 40,000 km journey into five equal periods of 8,000 km. In each period four tyres are used and one is spare, so over five periods each tyre is spare exactly once and used in the other four periods: 4 × 8,000 = 32,000 km.
Therefore each tyre is used for 32,000 km.