Question

Помогите пожалуйста ​

Answer 1

Ответ:

1)

$\frac{10}{100} = \frac{3}{x} \\ 10x = 100 \times 3 \\10 x = 300 \\ x = 300 \div 10 \\ x = 30$

$\frac{10}{100} = \frac{5}{x} \\ 10x = 500 \\ x = 500 \div 10 \\ x = 50$

$\frac{10}{100} = \frac{4}{x} \\ 10x = 400 \\ x = 400 \div 10 \\ x = 40$

$\frac{10}{100} = \frac{0.7}{x} \\ 10x = 70 \\ x = 70 \div 10 \\ x = 7$

$\frac{10}{100} = \frac{8.25}{x} \\ 10x = 825 \\ x = 825 \div 10 \\ x = 82.5$

2)

$\frac{25}{100} = \frac{15}{x} \\ 25x = 1500 \\ x = 1500 \div 25 \\ x = 60$

$\frac{25}{100} = \frac{9.1}{x} \\ 25x = 910 \\ x = 910 \div 25 \\ x = 36.4$

$\frac{25}{100} = \frac{0.4}{x} \\ 25x = 40 \\ x = 4 0\div 25 \\ x = 1.6$

$\frac{25}{100} = \frac{100}{x} \\ 25x = 10000 \\ x = 10000 \div 25 \\ x = 400$

3)

$\frac{150}{100} = \frac{300}{x} \\ 150x = 30000 \\ x = 30000 \div 150 \\ x = 200$

$\frac{150}{100} = \frac{600}{x} \\ 150x = 60000 \\ x = 60000 \div 150 \\ x = 400$

$\frac{150}{100} = \frac{750}{x} \\ 150x = 75000 \\ x = 75000 \div 150 \\ x = 500$