2:4

2:4 simplifies to 1:2.

• Reason: gcd(2,4) = 2, divide both terms by 2 → 2/2 : 4/2 = 1:2.
• As a single fraction (first to second): 2/4 = 1/2 = 0.5.
• If you need percentages of the total: first part = 1/(1+2) = 1/3 ≈ 33.33%, second = 2/3 ≈ 66.67%.