Question

Seven equal pieces are made out of a rope 5 of 21 ${\displaystyle \frac{5}{7}}$ m. Find the length of each piece.

Answer 1

Length of 7 pieces of rope = ${\displaystyle 21\frac{5}{7}}$ m

${\displaystyle =\frac{21\times 7+5}{7}=\frac{152}{7}}$

Length of each piece = ${\displaystyle \frac{152}{7}÷7}$

${\displaystyle =\frac{152}{7}\times \frac{1}{7}=\frac{152}{49}=3\frac{5}{49}}$ m