Question

The consumption of petrol by Mr Kumar car dropped from 100 to 85 litres a month with the 20% hike in petrol price .

Answer 1

Answer: 2%

Step-by-step explanation:

• Given that he uses 100 litres of petrol.
• Let that cost of petrol be Rs.x per litre.
• Money spent on petrol=Rs.100x
• After 20% hike in price new price is $x+\frac{20}{100}*x$=Rs.$\frac{6x}{5}$
• Now money spent on petrol=Rs.$85*\frac{6x}{5}$

                                                        =Rs.102x

• Increase in Money spent on petrol=Rs.(102x-100x)

                                                                    =Rs.2x

• %  Increase=$\frac{2x}{100x}*100$

                            =2%.

• Hence,money spent on petrol will increase by 2%.

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