Question

the teacher tells the class that the highest mark obtained by a student is twice the lowest mark +7. The highest score is 87 [take the lowest score to be l].

Answer 1

Answer:

Step-by-step explanation:

let highest mark be x

so lowest mark must be 2x +7

the highest score = 87

so 87 = 2x +7

 87-7 = 2x

 80/2 = x

40 = x

so the lowest score is 40

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