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A teacher tells the class that highest marks obtain by a student in her class is twice the lowest marks plus 7. if the highest marks is 87, what is the lowest mark |
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Answer» Answer: HIGHEST MARKS = twice the lowest marks +7 so, 87 =2 × x +7 =x = 87-7 ÷2 =x = 80÷2 =x= 40 |
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