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The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest mark is 87. What is the lowest mark? |
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Answer» Let the Lowest mark of the class = x Twice the least mark = 2x On adding 7 = 2x + 7 By problem; 2x + 7 = 87 2x = 87 – 7 2x = 80 x = 80/2 = 40 x = 40 ∴ The lowest mark = 40 |
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