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In a class of 45 students, 40% are boys ...

In a class of 45 students, 40% are boys and rest are girls. The average weight of the girls is 55 kg and that of boys is 65kg. What is the average weight (in kg) of the whole class?
45 छात्रों की एक कक्षा में, 40% लड़के हैं और शेष लड़कियाँ हैं | लड़कियों का औसत वज़न 55 किलो ग्राम है तथा लड़कों का औसत वज़न 65 किलो ग्राम है | पूरी कक्षा का औसत वज़न (किलो ग्राम में ) क्या है?

A

58 kg

B

60 kg

C

61 kg

D

59 kg

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