jaki procent liczby y stanowi liczba x a) x=14, y=20 b) x=16, y=25 c) x=54, y=125 d) x=61 , y=500 e) x=35, y=20 f) x=26, y=25 g) x=375, y=125 h) x=5000, y=500 i) x=540, y=120

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LoczeeQ LoczeeQ · Answer 1 · 2022-01-28T13:06:36+01:00

a)

[tex]20 - 100\% \\ 14 - x \\ \\ x = \frac{14 \times 100}{20} = \frac{14 \times 5}{1} = 70\%[/tex]

b)

[tex]25 - 100\% \\ 16 - x \\ \\ x = \frac{16 \times 100}{25} = \frac{16 \times 4}{1} = 64\%[/tex]

c)

[tex]125 - 100\% \\ 54 - x \\ \\ x = \frac{54 \times 100}{125} = \frac{54 \times 4}{5} = \frac{216}{5} = 43 \frac{1}{5} = \\ = 43.2\%[/tex]

d)

[tex]500 - 100\% \\ 61 - x \\ \\ x = \frac{61 \times 100}{500} = \frac{61 \times 1}{5} = \frac{61}{5} = 12 \frac{1}{5} = \\ = 12.2\%[/tex]

e)

[tex]20 - 100\% \\ 35 - x \\ \\ x = \frac{35 \times 100}{20} = \frac{35 \times 5}{1} = 175\%[/tex]

f)

[tex]25 - 100\% \\ 26 - x \\ \\ x = \frac{26 \times 100}{25} = \frac{26 \times 4}{1} = 104\%[/tex]

g)

[tex]125 - 100\% \\ 375 - x \\ \\ x = \frac{375 \times 100}{125} = \frac{375 \times 4}{5} = 75 \times 4 = \\ = 300\%[/tex]

h)

[tex]500 - 100\% \\ 5000 - x \\ \\ x = \frac{5000 \times 100}{500} = \frac{10 \times 100}{1} = 1000\%[/tex]

i)

[tex]120 - 100\% \\ 540 - x \\ \\ x = \frac{540 \times 100}{120} = \frac{540 \times 5}{6} = 90 \times 5 = \\ = 450\%[/tex]

Myślę że pomogłem ;)