A car runs on four tyres and has one extra tyre. If each tyre lasts for 20,000 km then what is the maximum distance (in km) that the car can travel using the five tyres? (A) 20,000(B) 22,000(C) 25,000(D) 30,000

1) 1
2) 2
3) 3
4) 4

• 20,000 only if logically thinking. Aft 20,000km, how the car can travel on the extra tyre alon??
• 11 years agoHelpfull: Yes(4) No(2)
• 25000 kms
  
  maximum distance (in km) that the car can travel using the five tyres = 5*20000/4= 25000 kms
• 12 years agoHelpfull: Yes(3) No(3)
• ans : 25000 km
  let consider 5 tyres are a,b,c,d,e
  each tyre works for 20000km and a car uses 4 tyres at a time
  
  tyre 0-5000km 5001-10000km 10001-15000km 15001-20000km 20000-25000km
  a 5000 5000 5000 5000 0
  b 5000 5000 5000 0 5000
  c 5000 5000 0 5000 5000
  d 5000 0 5000 5000 5000
  e 0 5000 5000 5000 5000
  
  from the above table we conclude that each tyre worked for 20000km and total distance traveled by the car is 25000km
  
• 11 years agoHelpfull: Yes(3) No(0)
• 20,000 Kms
  
• 11 years agoHelpfull: Yes(0) No(0)