I have a total of rs.300 in coins of denomination rs.1,rs 2 and rs 5.the number of rs Two coins is three times the number to of five coins.the total number of coin is 160.how many coins of each denomination are with me?
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1
Let the no. of Rs.5 coins be x
No. of Rs.2 coins=3x
No. of R.1 coins=160-x-3x=160-4x
then
5x+2 (3x)+160-4x=300
5x+6x+160-4x=300
7x=140
x=20
5 Rs.coins=20
2 Rs.coins=60
1 R.coins=80
No. of Rs.2 coins=3x
No. of R.1 coins=160-x-3x=160-4x
then
5x+2 (3x)+160-4x=300
5x+6x+160-4x=300
7x=140
x=20
5 Rs.coins=20
2 Rs.coins=60
1 R.coins=80
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0
Answer:
Answer : x=80, y=60 & z=20
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