Answer:
1:2
Step-by-step explanation:
25:50 can be simplified down to 1:2. Think about ratios like fractions, since 25 can be divided into 50 two times, 25 is 1/2 of 50.
Find the GCD (or HCF) of numerator and denominator. GCD of 25 and 50 is 25.
25 ÷ 2550 ÷ 25.
Reduced fraction: 12. Therefore, 25/50 simplified to lowest terms is 1/2.