Question

помогите пожалуйста!!!!!!!!!!!​

Answer 1

Ответ:

$g)\ 32\ \%.\\h)\ 50\ \%.\\i)\ 40\ \%.\\g)\ 20\ \%.\\k)\ 94\ \%.\\l)\ 50\ \%.$

Пошаговое объяснение:

g)
$500-\frac{x}{100}\cdot500=340\\50-\frac{x}{100}\cdot50=34\\25-\frac{x}{100}\cdot25=17\\25-17=\frac{x}{100}\cdot25\\8=\frac{25x}{100}\\8=\frac{x}{4}\\x=8\cdot4\\x=32$

h)
$12,8-\frac{x}{100}\cdot12,8=6,4\\2-\frac{x}{100}\cdot2=1\\2-1=\frac{x}{100}\cdot2\\1=\frac{2x}{100}\\1=\frac{x}{50}\\x=1\cdot50\\x=50$

i)
$450-\frac{x}{100}\cdot450=270\\45-\frac{x}{100}\cdot45=27\\15-\frac{x}{100}\cdot15=9\\15-9=\frac{x}{100}\cdot15\\6=\frac{15x}{100}\\6=\frac{3x}{20}\\3x=6\cdot20\\x=2\cdot20\\x=40$

g)
$50-\frac{x}{100}\cdot50=40\\5-\frac{x}{100}\cdot5=4\\5-4=\frac{x}{100}\cdot5\\1=\frac{5x}{100}\\1=\frac{x}{20}\\x=1\cdot20\\x=20$

k)
$\frac{47}{50}=\frac{x}{100}\\47\cdot100=x\cdot50\\47\cdot2=x\cdot1\\x=94$

l)
$9,6-\frac{x}{100}\cdot9,6=4,8\\2-\frac{x}{100}\cdot2=1\\2-1=\frac{x}{100}\cdot2\\1=\frac{2x}{100}\\1=\frac{x}{50}\\x=1\cdot50\\x=50$