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. 40000
b. 10000
c. 32000
d. 8000

• Ans : 32,000
  because they have given tital travelling distance is 40,000 km
  i.e each tyre has travelled 40,000 km so total travelled distance by tyres = 40,000*4=1,60,000
  this must be divided among 5 tyres hence each tyre is used to travel for (1,60,000/5)=32,000 km
• 9 years agoHelpfull: Yes(14) No(0)
• Each tyre used for 32000 kms .
  Tyres were changed after 8 kms or four tyms during whole journey , one tyre was not in use at a time
  Let 1 2 3 4 5 were tyres and at first tyre 1,2 ,3,4
  Were used
  After 8 kms, tyres used 5 2 3 4
  After 16 kms, tyres used 5 1 3 4
  After 24 kms, tyres used 5 1 2 4
  After 32 kms, tyres used 5 1 2 3 .
  So clearly every tyre used for 32 kms
• 9 years agoHelpfull: Yes(4) No(6)
• option c.
  40000/5=8000 i.e,for every 8000 kms a tyre has to b replaced.so each tyre will get changed for every 32000 kms as to replace other one
• 9 years agoHelpfull: Yes(4) No(5)
• answer is 32000
  (40000*4)/5
• 9 years agoHelpfull: Yes(3) No(0)
• Here we consider 4 tyres as 1 set.
  we have 5 tyres. so we take remaining 1 tyre as 1/4=0.25
  40000/1.25 = 32000
  Ans.c
• 9 years agoHelpfull: Yes(1) No(1)
• 40000/5
  =8000
• 9 years agoHelpfull: Yes(1) No(5)
• 32 is d right ans
• 9 years agoHelpfull: Yes(0) No(0)
• C)32000===>(40,000*4/5)
• 9 years agoHelpfull: Yes(0) No(0)