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My Scooty gives an average of 40 kmpl of petrol. But after recent filling at the new petrol pump, its average dropped to 38 kmpl. I investigated and found out that it was due to adulterated petrol. Petrol pumps add kerosene, which  cheaper than petrol, to increase their profits. Kerosene generates excessive smoke and knocking and gives an average of 18 km per 900 ml. if I paid Rs.  30 for a litre of petrol, what was the additional amount the pump-owner was making?

(a) Rs. 1.75                  (b) Rs. 1.80               (c) Rs. 2         (d) Rs. 2.30



Question ID - 50928 | SaraNextGen Top Answer

My Scooty gives an average of 40 kmpl of petrol. But after recent filling at the new petrol pump, its average dropped to 38 kmpl. I investigated and found out that it was due to adulterated petrol. Petrol pumps add kerosene, which  cheaper than petrol, to increase their profits. Kerosene generates excessive smoke and knocking and gives an average of 18 km per 900 ml. if I paid Rs.  30 for a litre of petrol, what was the additional amount the pump-owner was making?

(a) Rs. 1.75                  (b) Rs. 1.80               (c) Rs. 2         (d) Rs. 2.30

1 Answer
127 votes
Answer Key / Explanation : (c) -

Let  ml of kerosene be there in 1 litre mixture.

Then, quantity of petrol in 1 litre mixture =  ml.

 

So, 1 litre mixture has 900 ml petrol and 100 ml kerosene.

Cost of 1 litre petrol = Rs. 30.

Cost of 1 litre kerosene = Rs.= Rs. 10.

Cost of 1 litre mixture = Rs.

 additional amount earned by pump-owner =

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