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In a class of 70 students, 40% are girls...

In a class of 70 students, 40% are girls and remaining are boys. The average marks of the boys are 63 and that of the girls are 70. What is the average marks of the whole class?
70 छात्रों की एक कक्षा में 40% लड़कियाँ और शेष लड़के हैं | लड़कों का औसत अंक 63 तथा लड़कियों का औसत अंक 70 है | पूरी कक्षा का औसत अंक ज्ञात करें |

A

65.4

B

65.8

C

65.2

D

64.8

Text Solution

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The correct Answer is:
B
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In a class of 50 students, 46% are girls and the remaining are boys. The average of the boys marks is 58 and that of the girls is 62. What are the average marks of the whole class? 50 छात्रों की एक कक्षा में, 46% लड़कियाँ हैं तथा शेष लड़के हैं | लड़कों के अंकों का औसत 58 है तथा लड़कियों के अंकों का औसत 62 है | पूरी कक्षा का औसत अंक ज्ञात करें |

In a class of 40 students, 45% are girls and the remaining are boys. If the average of the girls' marks is 54 and that of the boys is 46, what is the average of the whole class ?

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In a class of 50 students, 40% are girls. The average weight of the boys is 62 kg and that of the girls is 58 kg. What is the average weight (in kg) of the whole class? 50 छात्रों की एक कक्षा में 40% लड़कियाँ हैं | लड़कों का औसत वज़न 62 किलो ग्राम तथा लड़कियों का औसत वज़न 58 किलो ग्राम है | पूरी कक्षा का औसत वज़न ( किलो ग्राम में ) क्या है ?

In a class of 40 students, 60% are girls. The average of the girls’ marks is 72 and that of the boys is 54. What are the average marks of the whole class? 40 छात्रों की एक कक्षा में, 60% लड़कियाँ हैं | लड़कियों के अंकों का औसत 72 है तथा लड़कों के अंकों का औसत 54 है | पूरी कक्षा के औसत अंक कितने हैं ?

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