Oil companies will be meeting on Monday to revise rates of petrol. A hike of about Rs 2.10-2.13 per litre in petrol price is needed because of weakening Indian currency. State-owned oil companies, as per practice, revise rates of petrol on 1st and 16th of every month based on the average imported price and exchange rate during the fortnight. As per this schedule, new rates will likely to be announced on Monday.