Simplify: \(21 : 28\)

\(3 : 4\)

Simplify: \(35 : 55\)

\(7 : 11\)

Simplify: \(24 : 12\)

\(2 : 1\)

Simplify: \(0.5 : 1.25\)

\(2 : 5\)

Simplify: \(1.2 : 3.6\)

\(1 : 3\)

Simplify: \(12 : 16 : 28\)

\(3 : 4 : 7\)

Simplify: \(1.2\text{ m} : 60\text{ cm}\)

\(2 : 1\)

Simplify: \(4\text{ cm} : 70\text{ mm}\)

\(4 : 7\)

Simplify: \(1.35\text{ km} : 100\text{ m}\)

\(27 : 2\)