Final answer:
To find the ratio that is not equivalent to 80%, we can convert each option to a decimal or fraction form and compare them to 0.80. Option D, 80:10, is the ratio that is not equivalent to 80%.
Step-by-step explanation:
To find the ratio that is not equivalent to 80%, we need to convert all the given ratios to a decimal or fraction form and compare them to 0.80. Let's analyze each option:
A. 4 to 5: This ratio can be written as 4/5, which is equivalent to 0.80. So, this ratio is equivalent to 80%.
B. 20/25: This ratio can be simplified to 4/5, which is equivalent to 0.80. So, this ratio is equivalent to 80%.
C. 0.8: This ratio is already in decimal form and is equivalent to 80%.
D. 80:10: This ratio can be simplified to 8:1, which is not equivalent to 80%. Therefore, option D is the ratio that is not equivalent to 80%.