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प्रश्न
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?
पर्याय
100
150
50
70
MCQ
उत्तर
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
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Number System (Entrance Exam)
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