A man multiplies a number by \(\frac{6}{7}\) instead of \(\frac{7}{6}\). Find the percentage of error in the calculation.
Answer & explanation
Correct answer: option 3
Diff. = \(\frac{7}{6}\) - \(\frac{6}{7}\) = \(\frac{13}{42}\)
Error of percentage = \(\frac{13}{42}\) x \(\frac{6}{7}\) x 100 = 26.53 %