A man buys 10 litre of petrol for rupees 420. How much petrol could he have bought for the same amount if the price had been rupees 2 less per litre?
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Step-by-step explanation:
cost of 10 litre petrol = 420
cost of 1 litre petrol = 420/10 = 42
cost decreased per litre = 2
new cost of petrol = 40
petrol bought for ₹420 = 420/40= 10.5 litre
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