Question

Num mes de 30 dias diga quantos dias correspondem a :
5/6 do mes
3/10 do mes
8/15do mes
19/30do mes
Preciso da conta

Answer 1

5/6 x 30 = 150/ 6 = 25 dias

3/10 x 30 = 90/10 = 9 dias

8/15 x 30 = 240/15 = 16 dias
19/30 x 30 = 19 dias

Answer 2

$\frac{5}{6}\cdot30=\frac{5\cdot30}{6}=\frac{150}{6}=25\\\\\frac{3}{10}\cdot30=\frac{3\cdot30}{10}=\frac{90}{10}=9\\\\\frac{8}{15}\cdot30=\frac{8\cdot30}{15}=\frac{240}{15}=16\\\\\frac{19}{30}\cdot30=\frac{19\cdot30}{30}=\frac{570}{19}=19$

Espero ter ajudado.
Bons estudos! :)