A man went to the Reserve Bank of India with ₹ 2000. He asked the cashier to give him ₹ 10 and ₹ 20…
The correct choice is: “100” Let x = number of ₹ 10 notes and y = number of ₹ 20 notes. x + y = 150 and 10x + 20y = 2000, i.e. x + 2y = 200. Subtracting the first equation…
Choose your answer
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?
Answer and explanation
Correct answer A
The correct choice is: “100”
Let x = number of ₹ 10 notes and y = number of ₹ 20 notes.
x + y = 150 and 10x + 20y = 2000, i.e. x + 2y = 200.
Subtracting the first equation from the second: y = 50, so x = 150 − 50 = 100.
Check: 100 × 10 + 50 × 20 = 1000 + 1000 = ₹ 2000. “50” is the number of ₹ 20 notes.
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CLAT UG