Answer:
20%
Step-by-step explanation:
Total number of desserts: 100 + 80 = 180
Number of desserts that contain nuts: 12 + 24 = 36
What percentage is 36 of 180?
To find what percentage a part is of the whole, divide the part by the whole and multiply by 100%.
percent = 36/180 * 100% = 0.2 * 100% = 20%
Answer: 20%