Question

Answer 1

y:5/11=2/5:2

=>y:5/11=4/5

=>y=4/5x5/11=20/55

Answer 2

\(\Leftrightarrow y:\dfrac{5}{11}=\dfrac{1}{5}\)

\(\Leftrightarrow y=\dfrac{1}{5}\times\dfrac{5}{11}\)

\(\Leftrightarrow y=\dfrac{5}{55}\)

\(\Leftrightarrow y=\dfrac{1}{11}\)

Answer 3

\(y:\dfrac{5}{11}=\dfrac{2}{5}\times\dfrac{1}{2}\)

\(y:\dfrac{5}{11}=\dfrac{2}{10}=\dfrac{1}{5}\)

\(y=\dfrac{1}{5}\times\dfrac{5}{11}\)

\(y=\dfrac{5}{55}=\dfrac{1}{11}\)

Answer 4

⇔y=15×511⇔y=15×511

⇔y=111.

Answer 5

=1/11 nhen.