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9 years, 7 months ago
A driver of auto rickshaw makes a profit of 20 % on every trip when he carries 3 passengers and the price of petrol is Rs. 30 a liter .Find the % profit for same journey if he goes for four passengers per trip and price of petrol reduces Rs. 24 liter?
9 years, 7 months ago
Driver spend 30 rupees on trip and makes 20 percent profit then he /she earns 36 rupees due to which he/ she earns 12 ruppes/passenger ,now he/she has 4 passenger then he/she earns 48 rupees(12/passenger) and spend only Rs 24 so profit equal to 24 and percentage is 100 percent
9 years, 7 months ago
Hi Swaroop,
The flaw in your solution is that when you consider the second case, since 4 persons are travelling in an auto, so the fuel consumed is also increasing. It would be 4/3 litres = Rs 32
Profit = 16/32*100 = 50
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