CAT 2019 Profit & Loss Question (Hard)

Question

On selling a pen at 5 loss and a book at 15 gain, Karim gains Rs. 7. If he sells the pen at 5 gain and the book at 10 gain, he gains Rs. 13. What is the cost price of the book in Rupees?

Accepted Answer

Step 1 Let the cost price of the pen be and the cost price of the book be Case 1 Pen sold at 5 loss Loss Book sold at 15 gain Gain Total gain Rs. 7 1 Case 2 Pen sold at 5 gain Gain Book sold at 10 gain Gain Total gain Rs. 13 2 Step 2 Add equations 1 and 2 Now plug into 2 But we are asked for the cos

CAT 2019

Quantitative

Profit & Loss

Hard

On selling a pen at 5% loss and a book at 15% gain, Karim gains Rs. 7. If he sells the pen at 5% gain and the book at 10% gain, he gains Rs. 13. What is the cost price of the book in Rupees?

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