A car owner buys petrol at Rs 17 Rs 19 and…

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A car owner buys petrol at Rs. 17, Rs. 19 and Rs. 20 per litre for three consecutive years. Compute the average cost per litre, if he spends Rs 6460 per year.

  1. A. Rs. 18.49
  2. B. Rs. 18.58
  3. C. Rs. 19.20
  4. D. Rs. 21.66

Answer: Option B

Here is complete explanation of A car owner buys petrol at Rs 17 Rs 19 and….

Solution(By ExamCraze Team)

Total quantity of petrol consumed in 3 years
= $$left( {frac{{6460}}{{17}} + frac{{6460}}{{19}} + frac{{6460}}{{20}}} right)$$   litres
= (380 + 340 + 323) litres
= 1043 litres
Total amount spent
= Rs. (3 × 6460)
= Rs. 19380
∴ Average cost
= Rs. $$left( {frac{{19380}}{{1043}}} right)$$
= Rs. 18.58

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