Find the cost of 3 2/5metres of cloth at 36 3/4 per metre.
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Find the cost of 3 2/5metres of cloth at 36 3/4 per metre.
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Step-by-step explanation:
Length \: of \: cloth = 3\frac{2}{5} m \\ = \frac{3 \times 5 + 2}{5} \\ = \frac{15 + 2}{5} \\ = \frac{17}{5} \: m \\ cost \: of \: cloth \: = 36 \frac{3}{4} m \\ = \frac{36 \times 4 + 3}{4} \\ = \frac{144 + 3}{4} \\ = \frac{147}{4} Rs. \: per \: metre \\ now \: cost \: of \: \frac{17}{5} \: m \: = \frac{17}{5} \times \frac{147}{4} \\ = Rs \frac{2499}{20} = Rs \: 124 \frac{19}{20}
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