GATE 2013 CS (CS1) – Question 10

General Aptitude · Quantitative Aptitude: Data Interpretation, Arithmetic and Number Computation · 2 marks · Multiple choice

Current erection cost of a structure is ₹13200. Daily labour wages rise by one fifth of current wages and working hours decrease by one twenty-fourth of the current period. Find the new erection cost.

₹16500
₹15180
₹11000
₹10120

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Show answer and explanation

Correct answer: (B) ₹15180

Explanation

The intended cost scaling is daily wages multiplied by the working-period factor: 13200×(1+1/5)×(1−1/24)=13200×(6/5)×(23/24)=15180. Thus B. This follows the paper’s stated decrease of the working period, rather than assuming fixed work and inversely scaling productivity.

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