Students in grades 7 and 8 were asked which food they liked best. The results are shown in the table.

 
Favorite Food
  Pizza Hot Dog Hamburger Total Grade 7 40 25 35 100 Grade 8 35 30 35 100 Total 75 55 70 200
Question
What percentage of all students prefer hot dogs?

1 answer

To find the percentage of all students who prefer hot dogs, we can use the total number of students who chose hot dogs and the overall total number of students.

From the table:

  • Total number of students who prefer hot dogs = 55
  • Total number of students surveyed = 200

Now, to calculate the percentage:

\[ \text{Percentage of students who prefer hot dogs} = \left( \frac{\text{Number of hot dog preferences}}{\text{Total number of students}} \right) \times 100 \]

Substituting in the values:

\[ \text{Percentage} = \left( \frac{55}{200} \right) \times 100 = 27.5% \]

Therefore, 27.5% of all students prefer hot dogs.

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