The average weight of girls is 15 kg and the average weight of the boys is 30 kg. The average weight of boys and girls both is 25kg. If the number of boys is 12, then the no.of girls is:
Answer & explanation
Correct answer: option 2
The average weight of girls is 15 kg and the average weight of the boys is 30 kg. The average weight of boys and girls both is 25kg. If the number of boys is 12, then the no.of girls is:
Correct answer: option 2