Mr. x lost a wallet containing Tk. 120. Incidentally, he had only notes of Tk. 2 and Tk. 5 denominations in the wallet. If the total number of notes was 30, how many Tk. 5 denominations notes did he have ?
Correct Answer: Option D
Let number of notes of 5tk = x, S number of notes of 2Tk. = 30-x
Then 5x+ 2(30-x) = 120, 5x+60-2x = 120 x = 20
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