the teacher tells the class that the highest marks obtained by a student in in her class is twice lowest marks plus 7 .the highest score is 87 ( take the lowest score to be l.
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The lowest mark obtained=(87-7)/2=40.
please note that do not use the formula of BODMAS because here 7 is added after doubling the lowest number
please note that do not use the formula of BODMAS because here 7 is added after doubling the lowest number
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