Question

Tìm x :

1/30 : x : 10/15 = 4 * 1/5

Answer 1

\(\frac{1}{30}:x:\frac{10}{15}=4\times\frac{1}{5}\)

\(\Rightarrow\frac{1}{30}:x:\frac{2}{3}=\frac{4}{5}\)

\(\Rightarrow\frac{1}{30}:x=\frac{2}{3}\times\frac{4}{5}\)

\(\Rightarrow\frac{1}{30}:x=\frac{8}{15}\)

\(\Rightarrow x=\frac{1}{30}::\frac{8}{15}\)

\(\Rightarrow x=\frac{1}{16}\)

Answer 2

\(\frac{1}{30}:x:\frac{10}{15}=4\cdot\frac{1}{5}\)

\(\frac{1}{30}:x:\frac{2}{3}=\frac{4}{5}\)

\(\frac{1}{30}:x=\frac{4}{5}\cdot\frac{2}{3}\)

\(\frac{1}{30}:x=\frac{8}{15}\)

\(x=\frac{1}{30}:\frac{8}{15}\)

\(x=\frac{1}{16}\)

Vậy X=\(\frac{1}{16}\)