Final answer:
Mr. Turner's back yard consists of 40% rose bushes, which is calculated by dividing the number of rose bushes (8) by the total number of bushes (20) and multiplying by 100 to get the percentage.
Step-by-step explanation:
To find what percent of Mr. Turner's back yard is rose bushes, you need to find the ratio of rose bushes to the total number of bushes and then convert that ratio to a percentage. Mr. Turner planted 8 rose bushes and 12 butterfly bushes, which makes a total of 8 + 12 = 20 bushes.
To determine the percentage, you divide the number of rose bushes by the total number of bushes and then multiply the result by 100:
(Number of rose bushes / Total number of bushes) × 100 = (8 / 20) × 100
Now, calculate the percentage:
(8 / 20) × 100 = 0.4 × 100 = 40%
So, 40% of Mr. Turner's back yard is planted with rose bushes.