Question

In a class in a middle school, there were 80 students. 30 percent were girls. How many of the class were boys. Awnser in percents.

Answer 1

70%

Explanation:

If 30% of the class were girls, then 70% of the class must be boys (since 30% + 70% = 100%).

To find out how many students this represents, we can use the following formula.

70/100 * 80 = 56

So there were 56 boys in the class.

To express this as a percentage, we can calculate what percentage of the class the boys represent.

56/80 * 100 = 70%

Therefore, 70% of the class were boys.

Answer 2

In a class of 80 students 30 are girls.

To Find:

The percentage of girls in the class is?

Solution:

The given problem can be solved using the concepts of percentages.

1. The total number of students in the class is 80, 30 are girls of the 80 members.

2. Percentage is given by the formula,

=> Percentage = (Favorable numbers x 100)/Total numbers,

3. Using the formula mentioned above the percentage can be calculated,

=> Percentage of girls = (30x100)/80,

=> (30x100)/80,

=> (3x100)/8,

=> (3x25)/2,

=> 75/2 = 37.5%.

Explanation: