Question

A person sells an article for rs550 gaining 1/10th of the cost price then the gain % is

Answer 1

Answer:

$\frac{1}{10} - 550 \\ 1 \: \: \: - \frac{550}{10} \\ 11 \: - 55 \times 11 = 605 \\ batta = 605 - 550 = 55 \\ batta\% = \frac{55 \times 100}{605} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 9 \frac{1}{11} \%$