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Five pens and three notebooks cost ₹155; three pens and five notebooks cost ₹165. What does one pen and one notebook cost together?

Competition practiceAlgebra
  • A₹40
  • B₹35
  • C₹45
  • D₹32

Step-by-Step Solution

Adding: 8 pens + 8 notebooks = ₹320, so one of each costs ₹40. (Pen ₹10, notebook ₹30.)
Answer: A) ₹40

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