My father is an Indian and mom is Canadian
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Explanation:
Total marks of 48 students =48x45=2160
Let the number of boys be B and the number of girls be (48−B)
Then total marks of boys =40B
Total marks of girls =50(48−B)=2400−50B
⇒ 40B+2400−50B=2160
⇒ 10B=240
⇒ B=24
Thus number of girls =48−24=24
Therefore, required ratio =24:24=1:1
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