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A sum of ₹1,000 is made up of ₹50, ₹20 and ₹10 notes, 40 notes in all. There are twice as many ₹20 notes as ₹50 notes. How many ₹10 notes are there?

Competition practiceAlgebra
  • A10
  • B20
  • C15
  • D5

Step-by-Step Solution

Let ₹50 notes = , ₹20 notes = , ₹10 notes = . Then , so and ₹10 notes = 40 − 30 = 10.
Answer: A) 10

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