12,4 bagi kurung 1 2 per 5 + 25%

Jawaban:

$12,4 \div (1 \frac{2}{8} + 25\%) \\ \\ = \frac{124}{10} \div (( \frac{10}{8} \times \frac{12.5}{12.5} ) + \frac{25}{100} ) \\ \\ = \frac{124}{10} \div ( \frac{125}{100} + \frac{25}{100} ) \\ \\ = \frac{124}{10} \div \frac{150}{100} \\ \\ = \frac{124}{10} \times \frac{100}{150} \\ \\ = \frac{248}{25}$