A) A room is twice as long as it is broad and its height is 4.5 m. If the cost of papering its walls at Rs 15 per sq. metre is Rs 2430, find the cost of paving marbles on its floor at
Rs 150 per sq. metre.
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Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable