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Ten students from Class X took part in a Mathematics quiz. If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in the quiz.

Sagot :

To find the number of boys and girls who took part in the quiz, let’s solve this step by step.

1. Define the total number of students:
The total number of students who participated in the quiz is given as 10.

2. Define the relationship between boys and girls:
It is mentioned that the number of girls is 4 more than the number of boys.

3. Set up the equations:
- Let the number of boys be [tex]\( b \)[/tex].
- The number of girls will then be [tex]\( b + 4 \)[/tex] (since there are 4 more girls than boys).

4. Formulate the equation:
- Since the total number of students is 10, we can write the equation as:
[tex]\[ \text{{number of boys}} + \text{{number of girls}} = 10 \][/tex]
- Substituting the expressions for boys and girls:
[tex]\[ b + (b + 4) = 10 \][/tex]

5. Solve the equation:
- Combine like terms:
[tex]\[ 2b + 4 = 10 \][/tex]
- Subtract 4 from both sides to isolate the term with [tex]\( b \)[/tex]:
[tex]\[ 2b = 6 \][/tex]
- Divide both sides by 2 to solve for [tex]\( b \)[/tex]:
[tex]\[ b = 3 \][/tex]

6. Determine the number of girls:
- Since the number of girls is [tex]\( b + 4 \)[/tex]:
[tex]\[ \text{{Number of girls}} = 3 + 4 = 7 \][/tex]

7. Conclusion:
- The number of boys who took part in the quiz is 3.
- The number of girls who took part in the quiz is 7.

Therefore, there are 3 boys and 7 girls who participated in the Mathematics quiz.
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