Question

what percentage of the friends like mushroom and pepperoni pizza? 10% 20% 30% 70%

Explanation:

Step1: Find total number of friends

Add the number of friends who like each type of pizza. $4 + 2+1 + 3=10$.

Step2: Find number of friends who like mushroom and pepperoni

Add the number of friends who like mushroom and pepperoni. $2 + 1=3$.

Step3: Calculate the percentage

Use the formula $\text{Percentage}=\frac{\text{Favorable}}{\text{Total}}\times100\%$. So, $\frac{3}{10}\times 100\% = 30\%$.

Answer:

30%