I have a total of rupees 300 in coins of denominations rupees 1,2 and 5. The number of rupees 2 coins is 3times the number of rupees 5coins. The total number of coins is 160. How many coins of each denomination with me ??
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Here is the answer .
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Marmik123:
this is wrong
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Let the no. of Rs. 5 coins be x
no of Rs. 2 will be 3x
Rs. 1 coin be. 160-3x-x = 160-4x
the amount I have,
from Rs. 2 coins= 3x= 3x2 = 6x
from Rs. 5 coins= x= 5x
from Rs. 1 coin = (160-4x)x1 = 160-4x
Total money Rs.300
6x+5x+160-4x = 300
7x + 160 = 300
7x = 140
x = 20
No. of Rs. 2 Coins = 3x20= 60
No. of Rs. 5 coins = x=20
No. of Re. 1 coin = 160-4x20 =80
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