Problem Solving





Example-3




These sample questions have been taken from the old GMAT question papers.

Answer each question yourself before reading the analysis that follows each question.

Question


In traveling from a dormitory to a certain city, a student went 1/5 of the way by foot, 2/3 of the way by bus, and the remaining 8 kilometers by car. What is the distance, in kilometers, from the dormitory to the city?

(A) 30

(B) 45

(C) 60

(D) 90

(E) 120


Analysis


[1/5] + [2/3] = [3 + 10]/15 = 13/15. Therefore, the distance of 8 kilometers traveled by car must have been 2/15th of the distance. Therefore the total distance must be 8* [15/2] = 60 kms.

So, the answer is (C).



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