Question

tìm x trong tỉ lệ thức 1/5x:3=2/3:0,25 là?

Answer 1

\(\frac{\frac{1}{5}x}{3}=\frac{\frac{2}{4}}{\frac{1}{4}}\)

\(\Leftrightarrow\frac{1}{5}x:3=2\)

\(\Rightarrow\frac{1}{5}x=6\)

\(\Rightarrow x=\frac{6}{\frac{1}{5}}\)

\(x=30\)

Answer 2

\(\frac{1}{5}x:3=\frac{2}{3}:0,25\)

\(\frac{1}{5}x:\frac{2}{3}=3:0,25\)

\(\frac{1}{5}x:\frac{2}{3}=3:\frac{1}{4}\)

\(\frac{1}{5}x:\frac{2}{3}=3.4\)

\(\frac{1}{5}x:\frac{2}{3}=12\)

\(\frac{1}{5}x=12.\frac{2}{3}\)

\(\frac{1}{5}x=8\)

\(x=8.5\)

\(x=40\)