Question : If the cost of 120 m of cloth is INR 9,600, then what will be the cost of 147 m of that cloth?
Option 1: INR 16,170
Option 2: INR 11,670
Option 3: INR 11,760
Option 4: INR 17,160
Correct Answer: INR 11,760
Solution :
Given: The cost of 120 m of cloth = INR 9,600
$\frac{\text{Cost}_1}{\text{Cost}_2} = \frac{\text{Length}_1}{\text{Length}_2}$
$⇒\frac{9600}{\text{Cost}_2}=\frac{120}{147}$
$\therefore$ The cost of 147m of cloth = 147 × 80 = INR 11760
Hence, the correct answer is INR 11,760.
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