The current erection cost of a structure is Rs.13,200.

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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

1. 16,500
2. 15,180
3. 11,000
4. 10,120

Correct Option: B

Cost ∝ (wages × hours)
c ∝ wh