The railway fares of air conditioned sleeper and ordinary sleeper class are in the ratio 4:1. The number of passengers travelled by air conditioned sleeper and ordinary sleeper classes were in the ratio 3:25. If the total collection was Rs. 37,000, how much did air conditioner sleeper passengers pay?
Pabitra had l of petrol in the fuel tank of his vehicle at the start of a journey. During the journey, l of petrol was consumed. What fraction of the initial petrol was left in the fuel tank after the journey?