Question

Срочно надо,пожалуйста

Answer 1

$frac{3m}{15sm} = frac{300}{15} = 20 \ frac{3h}{45min} = frac{180min}{45min} = 4 \ frac{7.5kg}{250g} = frac{7500g}{250g} = 30 \ frac{31}{31} = 1 \ frac{999}{10} = 99.9$

там h - это час.