SOLUTION: aA student took three papers in mathematics exams.his marks for two of the papers we 60 and 67 respectively.To gain a grade one as an average of not less than 70 is needed over the

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: aA student took three papers in mathematics exams.his marks for two of the papers we 60 and 67 respectively.To gain a grade one as an average of not less than 70 is needed over the      Log On

Hi
 (60 + 67 + x)/3 ≥ 70
              x  ≥ 210 - (60 + 67)
              x  ≥ 83

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