The number of students in a class is 75,...

The number of students in a class is 75, out of which `33 1/3`% are boys and the rest are girls. The average score in mathematics of the boys is `66 2/3`% more than that of the girls. If the average score of all the students is 66, then the average score of the girls is:
एक कक्षा में 15 छात्र हैं, जिनमें से `33 1/3`% लड़के हैं और शेष लड़कियाँ हैं | लड़कों का गणित में औसत अंक लड़कियों के गणित में औसत अंक से `66 2/3`% अधिक है | यदि सभी छात्रों का औसत अंक 66 है, तो लड़कियों का औसत अंक ज्ञात करें |

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In a class, there are 54 students. 33(1)/(3)% of the number of students are boys and rest are girls. The average score in mathematics of boys is 50% more than that of the girls. If the average score of all the students is 70, then what is the average score of the boys?

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There are 90 students in a class, out of which 70% are from village A and others are from village B. The average score of students from village B in a test is 20% more than that from village A. If the average score of all the students is 53, then what is the average score of the students from village B? एक कक्षा में 90 छात्र हैं, जिनमें से 70% छात्र गाँव A से हैं तथा अन्य छात्र गाँव B से हैं | गाँव B के छात्रों का औसत अंक गाँव A के छात्रों के औसत अंक से 20% अधिक है | यदि सभी छात्रों का औसत अंक 53 है, तो गाँव B के छात्रों का औसत अंक ज्ञात करें |

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In a class, the mumber of boys is 40% more than the number of girls. The average score in mathematics of all the students in the class is 55. If the average score of girls is 35% more than that of boys, then what is the average score in mathematics of girls?

GAGAN PRATAP -ALLIGATION-ALLIGATION (SHEET-3)

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