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प्रश्न
If a 25 cm long candle burns for 45 minutes, how long will another candle of the same material and same thickness but 5 cm longer than the previous one, burn?
योग
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उत्तर
25 cm long candle burn in = 45 minutes
1 cm long candle will burn in = `45/25` minutes
25 + 5 = 30 cm long candle will burn in
`= (45 xx 30)/25` minutes = 54 minutes
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