Deveshi has a total of 590 as currency notes in the denominations of
750,20 and 10. The ratio of the number of 50 notes and 20 notes is 3:5. If she has
a total of 25 notes, how many notes of each denomination she has?
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Answer:
Let
No.of currency notes of Rs50=3x
No.of currency notes of Rs20=5x
No.of currency notes of Rs10=25-
(3x+5x)=25-8x
Amount made by Rs 50 notes =50×3x=150x
Amount made by Rs 20 notes =20×5x=100x
Amount made by Rs 10 notes =10×(25-8x)
250-80x
Total money = 590
= 150x + 100x + 250 - 80x = 590
= 170x = 340
= x = 2
Denominations:
Rs 50 = 3×2 = 6
Rs 20 = 5×2 = 10
Rs 10 = (25-8×2) = 9
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