Question
If a flat costs Rs.4500 per sq. ft, and a commercial space costs Rs.9500 per sq. ft, then what is the ratio of their areas if the total cost of both are the same?
Answer: Option B
LET A1 BE THE AREA OF FLAT AND A2 BE THAT OF THE COMMERCIAL SPACE
TOTAL COST = AREA * RATE
THEREFORE, COST OF FLAT = A1*4500 ; COST OF COMMERCIAL SPACE = A2*9500
BOTH THE ABOVE COSTS ARE SAME
A1*4500 = A2*9500
A1:A2 = 9500:4500 = 19:9
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LET A1 BE THE AREA OF FLAT AND A2 BE THAT OF THE COMMERCIAL SPACE
TOTAL COST = AREA * RATE
THEREFORE, COST OF FLAT = A1*4500 ; COST OF COMMERCIAL SPACE = A2*9500
BOTH THE ABOVE COSTS ARE SAME
A1*4500 = A2*9500
A1:A2 = 9500:4500 = 19:9
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