Question : A purchased a book for INR 1,600. A sold it to B at a loss of 10% and B sold it to C at a loss of 20%. At what price did C purchase this book?
Option 1: INR 1,224
Option 2: INR 1,442
Option 3: INR 1,152
Option 4: INR 1,098
Correct Answer: INR 1,152
Solution :
The cost price for A = INR 1600
A sold it to B at a loss of 10%
Cost price for B = 90% of A = $\frac{90}{100}\times1600=1440$
B sold it to C at a loss of 20%
Cost price for C = 80% of B = $\frac{80}{100}\times1440=1152$
Hence, the correct answer is INR 1,152.
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