The average weight of all the students in a class is 58 kg, and that the average weight of all the 10 girls of the class is 50 kg. If the average weight of boys is 60 kg, how many students are there in the class?
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The average weight of 30 boys is 60 kg and average weight of 20 girls is 35 kg. Find the average weight of the class. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. Hence, the correct option is (b).
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Answer is there are 22 students in the class
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