Twenty-four students in Jamal's class are wearing tennis shoes. There are thirty students in his class. Jamal says that 70 percent of his class is wearing tennis shoes. Is Jamal correct? Explain your reasoning.

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For the reader's benefit:

To determine if Jamal's statement is correct, follow these steps:

1. Calculate the percentage of students wearing tennis shoes:
- Number of students wearing tennis shoes: 24
- Total number of students: 30

2. Use the formula for percentage:
\[
\text{Percentage} = \left( \frac{\text{Number of students wearing tennis shoes}}{\text{Total number of students}} \right) \times 100
\]

3. Plug in the values:
\[
\text{Percentage} = \left( \frac{24}{30} \right) \times 100 = 80\%
\]

4. Compare the calculated percentage with Jamal's statement:
- Jamal stated 70%, but the calculation shows 80%.

Therefore, Jamal is incorrect. The correct percentage is 80%.

For this case we have that the number of students, in Jamal's class, who wear tennis shoes is given by 24, out of a total of 30 students in the class. You want to know the percentage of students in the class who wear tennis shoes, to determine if Jamal is right. For this, we apply a rule of three:

30 students --------------> 100%

24 students --------------> x

Where x represents the number of students who wear tennis shoes. So:

[tex]x = \frac {24 * 100} {30}\\x = 80[/tex]

Thus, 80% of the students in Jamal's class wear tennis.

Jamal was not right.

Answer:

Jamal was wrong. 80% of their class wears tennis shoes.