A teacher tells the class that the highest marks obtained by a student in her class is twice the lowest markes plus 7. The highest score is 87. what is the lowest score. please tell me the answer of that Question

let the lowest marks be x, then

(87 - 7) /2 = x

=80 / 2 = x

= 40

Therefore, the lowest score of the class is 40 marks.

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