Project ForgeGeneral Aptitude
Quantitative Aptitude
GATE 2013
Hard
The current erection cost of a structure is Rs. 13,200. If the labour wages per day increase by 1/5 of the current wages and the working hours decrease by 1/24 of the current period, then the new cost of erection in Rs. is
- A16,500
- 15,180
- C11,000
- D10,120
Explanation
New wage rate = current wage x (1 + 1/5) = 6/5 of current. New working hours = current hours x (1 - 1/24) = 23/24 of current. New cost = current cost x (6/5) x (23/24) = 13200 x 6/5 x 23/24 = 15,840 x 23/24 = 15,180.
Source: GATE ME 2013 (Booklet Code A) (2013)
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