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The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class?
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The average weight of a class is 40 kg. 10 new students of average wei...
- Original Class Strength Calculation:
Given that the average weight of the class is 40 kg, and the average weight decreased by 1 kg when 10 new students of average weight 38 kg joined the class. Let's denote the original class strength by 'x'.
- Initial Total Weight Calculation:
The initial total weight of the class can be calculated by multiplying the original class strength by the average weight:
Total weight = 40 kg * x
- Final Total Weight Calculation:
After the 10 new students joined the class, the total weight of the class becomes:
Total weight = 38 kg * (x + 10)
- Equation Formulation:
According to the given information, the average weight decreased by 1 kg. So, we can set up the equation:
40x = 38(x + 10)
- Solving the Equation:
Solving the equation will give us the original class strength:
40x = 38x + 380
2x = 380
x = 190
- Original Class Strength:
Therefore, the original strength of the class was 190 students before the new students joined.
Given that the average weight of the class is 40 kg, and the average weight decreased by 1 kg when 10 new students of average weight 38 kg joined the class. Let's denote the original class strength by 'x'.
- Initial Total Weight Calculation:
The initial total weight of the class can be calculated by multiplying the original class strength by the average weight:
Total weight = 40 kg * x
- Final Total Weight Calculation:
After the 10 new students joined the class, the total weight of the class becomes:
Total weight = 38 kg * (x + 10)
- Equation Formulation:
According to the given information, the average weight decreased by 1 kg. So, we can set up the equation:
40x = 38(x + 10)
- Solving the Equation:
Solving the equation will give us the original class strength:
40x = 38x + 380
2x = 380
x = 190
- Original Class Strength:
Therefore, the original strength of the class was 190 students before the new students joined.
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The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class?
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The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class? for SSC CHSL 2025 is part of SSC CHSL preparation. The Question and answers have been prepared according to the SSC CHSL exam syllabus. Information about The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class? covers all topics & solutions for SSC CHSL 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class?.
The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class? for SSC CHSL 2025 is part of SSC CHSL preparation. The Question and answers have been prepared according to the SSC CHSL exam syllabus. Information about The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class? covers all topics & solutions for SSC CHSL 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The average weight of a class is 40 kg. 10 new students of average weight 38 kg, joined the class there by decreasing the average by 1 kg. What is the original strength of the class?.
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