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Quantitative Reasoning – What marks did he get?

PSA 2014_XI_Q18. Fadi’s teacher scores each student’s final mark according to the given table. For his assignments, Fadi received a mark of 80. His final marks were 72.
What marks did he get for his tests ?

PSA 2014_XI_Q18_1

(1) 88

(2) 56

(3) 64

(4) 70

Ans: Fadi received a mark of 80 in assignments; since the weight-age is 20%, the contribution of the assignments = 20% of 80= 16. Since, final marks = 72, Fadi must have got 72-16= 56 in his tests. 56 is the “weighted marks”.

“Weighted marks” = 80% of original marks

=> Original marks = 100*56/80 = 5*56/4= 70. Option (4).

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