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प्रश्न
25 metres of cloth costs ₹ 1,012.50. What will be the cost of 20 metres of cloth of the same type?
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उत्तर
Cost of 25 m of cloth = ₹ 1012.50
Cost of 1 m of cloth = ` ₹ 1012.50/25`
∴ Cost of 20 m of cloth = `₹1012.50/25xx20` = ₹ 810
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