Question

1) х : 5 = 12 : 15
2) 2 : у = 2,4 : 0, 08

Answer 1

Ответ:

1)х:5=12:15

15х=60

х=4

2)2:y=2,4:0,08

2:y=2,4:0,08, y≠0

$\frac{5}{12}*0,16=y \\\frac{5}{12}*\frac{4}{25}=y\\\\\frac{1}{3}*\frac{1}{5}=y\\\frac{1}{15}=y\\\\y=\frac{1}{15}, y=0\\y=\frac{1}{15}$