Question

solve this problem plz​

Answer 1

$5. \: cost \: of \: 1 \: m \: cloth = 36\frac{2}{3} \\ cost \: of \: 3 \frac{3}{4} m = 3 \frac{3}{4} \times 36 \frac{2}{3} \\ = \frac{15}{4} \times \frac{110}{3} \\ = \frac{5 \times 110}{4} \\ = \frac{550}{4} \\ = 137.5 \\ hence \: the \: cost \: of \: 3 \frac{3}{4} m \\ cloth \: is \: rs \: 137.5$

$cost \: of \: \frac{19}{4} m \: of \: wire = \frac{171}{2} \\ cost \: of \: 1 \: m \: wire = \frac{ \frac{171}{2} }{ \frac{19}{4} } \\ = \frac{171 \times 4}{2 \times 19} \\ = 9 \times 2 \\ = 18 \\ the \: cost \: of \frac{19}{4} m \: wire \: is \: rs18$