Ответ:

86. Решение:

  1. а) 37% = \(\frac{37}{100}\) (не сокращается)
  2. 83% = \(\frac{83}{100}\) (не сокращается)
  3. 61% = \(\frac{61}{100}\) (не сокращается)
  4. б) 15% = \(\frac{15}{100}\) = \(\frac{3}{20}\)
  5. 50% = \(\frac{50}{100}\) = \(\frac{1}{2}\)
  6. 60% = \(\frac{60}{100}\) = \(\frac{3}{5}\)
  7. в) 49% = \(\frac{49}{100}\) (не сокращается)
  8. 40% = \(\frac{40}{100}\) = \(\frac{2}{5}\)
  9. 80% = \(\frac{80}{100}\) = \(\frac{4}{5}\)