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प्रश्न
A tin contains 20 litres of petrol. Due to leakage, 3 litres of petrol is lost. What percent is still present in the tin?
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उत्तर
Total petrol in tin = 20 litres
Last due to leakage = 3 litres
Balance petrol in tin = (20 – 3) = 17 litres
Percentage of petrol in tin = `17/20xx100` = 85%
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