The average weight of class 5th students is 22kg. If the average weight of class 5th and 6th students is 25kg and average weight of class 4th students is 18 kg, then find the ratio of class 5th and 4th students of the school is
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Answer:
45
Step-by-step explanation:
45 kg
Total weight of 24 students =24×35=840kg
Total weight of 25 persons with teacher =25×35.4=885kg.
∴ Weight of teacher =(885−840)kg=45kg.
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