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A school has 240 students. If 25% of them are girls, how many boys are there?

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Question: A school has 240 students. If 25% of them are girls, how many boys are there?

Options:

  1. 180
  2. 60
  3. 120
  4. 90

Correct Answer: 180

Solution: 

25% of 240 is 60 girls. So, 240 - 60 = 180 boys.

A school has 240 students. If 25% of them are girls, how many boys are there?

Practice Questions

Q1
A school has 240 students. If 25% of them are girls, how many boys are there?
  1. 180
  2. 60
  3. 120
  4. 90

Questions & Step-by-Step Solutions

A school has 240 students. If 25% of them are girls, how many boys are there?
  • Step 1: Find out how many girls are in the school by calculating 25% of 240.
  • Step 2: To find 25%, multiply 240 by 0.25 (which is the decimal form of 25%).
  • Step 3: Calculate 240 * 0.25 = 60. This means there are 60 girls.
  • Step 4: To find the number of boys, subtract the number of girls from the total number of students.
  • Step 5: Calculate 240 - 60 = 180. This means there are 180 boys.
  • Percentage Calculation – Understanding how to calculate a percentage of a total number.
  • Subtraction – Using subtraction to find the remaining quantity after a portion has been identified.
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