Cost Price from Profit and Loss Equations
CAT 2019 Slot 1 · Quantitative Ability · Easy · Profit & Loss
This is an easy Quantitative Ability question from the CAT 2019 Slot 1 paper. It tests Profit & Loss. The full answer key and a step-by-step explanation are below — try it yourself first, then reveal the solution.
On selling a pen at loss and a book at gain, Karim gains Rs. 7. If he sells the pen at gain and the book at gain, he gains Rs. 13. What is the cost price of the book in Rupees?
- A.
80
- B.
85
- C.
100
- D.
95
Answer
A
Explanation
Let cost of pen be and book be . Adding the two equations: .
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