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A man went to the Reserve Bank of India with ₹2000. He asked the cashier to give him ₹10 and ₹20 notes only in return. The man got 150 notes in all. How many notes of ₹10 did he receive? - Mathematics

MCQ

A man went to the Reserve Bank of India with ₹2000. He asked the cashier to give him ₹10 and ₹20 notes only in return. The man got 150 notes in all. How many notes of ₹10 did he receive?

Options

  • 100

  • 150

  • 50

  • 70

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Solution

100

Explanation:

Let ₹ 10 note be x and ₹ 20 note be y According to the question,

x + y = 150

10x + 20y = 2000

⇒ By Solving

x = 100

Concept: Number System (Entrance Exam)
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