Question

a full roll of cloth contains d meters.when 18m have been sold,the value of the remaining cloth is #25,600. how many metres of cloth are worth #25,600 and express the selling price of 1 metre of cloth in terms of d

Answer 1

Answer:

$d - 18m = 25600 \\selling \: price \: of \: 1m = \frac{25600}{d - 18m } \\ 1m + 18m = \frac{25600}{d} \\ 19m = \frac{25600}{d } \\ 19m \times d = 25600 \\ d = \frac{25600}{19} \\ d = \frac{25600}{19} \: or \: 1347.36 \\ both \: are \: correct.$

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