Answer:
15:2.
Step-by-step explanation:
Divide each part by the Greatest Common Factor:
300/20 : 40/20
= 15: 2.
[tex]300:40=\dfrac{300}{40}=\dfrac{300:10}{40:10}=\dfrac{30}{4}=\dfrac{30:2}{4:2}=\dfrac{15}{2}=15:2[/tex]
