If the total cost of constructing the house is Rs. 3,60,000 in 1991 and Rs. 8,64,000 in 2001, what is the amount spent on Steel in 1991 and 2001?

A. Rs. 2,16,000, Rs. 4,32,000

B. Rs. 60,000, Rs. 84,000

C. Rs. 80,000, Rs. 2,10,000

D. Rs. 50,000, Rs. 1,44,000

Answer: Option D

Solution(By Examveda Team)

$$\eqalign{ & {\text{Expenditure on steel}} \cr & {\text{Year }}1991 = \frac{{{{50}^ \circ }}}{{{{360}^ \circ }}} \times 360000 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = {\text{Rs. }}50000 \cr & {\text{Year }}2001 = \frac{{864000}}{{360}} \times 60 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = {\text{Rs. }}144000 \cr} $$