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In a class, the mumber of boys is 40% mo...

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?

A

A)64

B

B)`62.4`

C

C)60

D

D)`64.8`

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The correct Answer is:
D
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There are 96 students in a class, out of which the number of girls is 40% more than that of the boys. The average score in mathematics of the boys is 40% more than the average score of girls. If the average score in mathematics of all the students is 63, then what is the average score of the girls in mathematics? एक कक्षा में 96 छात्र हैं, जिनमें से लड़कियों की संख्या लड़कों की संख्या से 40% अधिक है | लड़कों का गणित में औसत प्राप्तांक लड़कियों के औसत प्राप्तांक से 40% अधिक है | यदि गणित में सभी छात्रों का औसत प्राप्तांक 63 है, तो गणित में लड़कियों का औसत प्राप्तांक ज्ञात करें |

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