Answer:
Let number of notes be 2x, 3x and 5x. According to question, \[2x\times 100+3x\times 50+5x\times 10=400000\] or, \[200x+150x+50x=400000\] or, \[400x\text{ }=\text{ }400000\] or, \[x=\frac{400000}{400}\] [Dividing both sides by 400] or, x = 1000 Hence, Number of denomination of Rs. 100 notes \[=\text{ }2\times 1000=2000\] Number of denomination of Rs. 50 notes \[=\text{ }3\times 1000=3000\] Number of denomination of Rs.10 notes \[=\text{ }5\times 1000=5000\] Hence, required denominations of notes of Rs. 100, Rs. 50 and Rs. 10 are 2000, 3000 and 5000, respectively.
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