I have total of rs.300 in coins of denomination rs. 1,rs.2,rs.5.the number of Rs 2 is3times of rs 5.total No. of coins is 160.how many coins of each denomination.
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let the number of 5 rs coins be x, now the number of 2 rs coins will be 3X and number of 1 rs coins will be 160-4X.
now 160-4x+6x+5x = 300
7x = 140 so x = 20
number of 5rs coin = 20
number of 2rs coin = 60
number of 1rs coin = 80
now 160-4x+6x+5x = 300
7x = 140 so x = 20
number of 5rs coin = 20
number of 2rs coin = 60
number of 1rs coin = 80
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Answer:
Answer : x=80, y=60 & z=20
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