Question

the teacher tells class that he highest marks obtained by student in her class is twice the lowest marks plus 7. the highest score is 87. what is lowest score
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Answer 1

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let the lowest marks be x

according to the question :-

2x (twice the x) + 7 = 87 (highest marks)

2x = 87 - 7 = 80

2x = 80

so, x = 80/2

x = 40

means that lowest marks is 40

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