After spending half his money on a book and then ₹50 on a pen, Arjun had ₹150 left. How much money did he start with?
- A.350
- B.375
- C.400 ✓
- D.425
Explanation: Before buying the pen he had 150+50=₹200, which was half his original money, so he started with 200×2=₹400.
Class 6 IMO Mathematics Olympiad practice · Olympiad Thinking · Working Backwards & Problem-Solving Strategies
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